As of mid-2021, many countries are not issuing tourist visas, and/or have halted their visa-on-arrival programs, due to the COVID-19 pandemic. Some have also restricted other types of vsia. Many also have requirements for testing and/or quarantine. Check with an embassy or consulate or a government web site when planning any travel.
A visa is a document issued by some countries to visitors from other countries to facilitate – but not guarantee – admission at the border. It can be a stamp or sticker in your passport, or can simply be an electronic record. It's important for each country you visit or transit to check if you need a visa, for the kind of visit you are intending. Not having the correct visa may see you denied boarding to transportation or denied admission at the border. Many popular travel destinations provide visitors (from most countries) with a short-term tourist visa on arrival, but sometimes countries require you to apply in advance. The conditions and requirements depend on your nationality.
A few countries not known for tourism require exit visas separate from entry visas.
Some countries routinely deny entry to holders of passports that show evidence of travel to a country that they don't recognize (e.g. Israel). In such cases, it may be advisable to have two passports, if the country issuing your passport allows that. On the other hand lying is often risky. See "Visa trouble".
Do you need a visa?
Countries require visas from visitors for regulatory, security and economic reasons. It is important to confirm visa requirements with a current and reliable source, such as the embassy or consulate of the country where you plan to travel. You may need a visa for any countries you visit or transit on your trip. Visa requirements vary depending on the nationality of your passport, the length of your stay, whether you will leave the airport, the nature of your trip, your point of entry, and the areas you will be visiting. These requirements can also change regularly. While you may be exempt from having to obtain a visa when making a short trip to a particular country for tourism or business, long stays in any foreign country will almost always require you to obtain some form of visa or permit.
As a rule of thumb, the more different (culturally, economically, politically, etc.) your country of citizenship is from the destination country, the more likely it is that you need a visa even for tourism or transit. This is especially the case if the country you plan to visit has a richer economy than the country you hold a passport for.
Visa requirements nearly always depend on your nationality, not your residency. If you are a non-citizen where you reside, never rely on local advice concerning whether you need a visa to visit a nearby foreign country or other popular location abroad. The locals may not need visas, while you may (or vice versa). However, for some combinations of countries, being a legal resident of the Schengen countries (most European countries) or the U.S., for example, can greatly speed up the visa process and make a tourist visa much easier to obtain.
Also, be sure you will be allowed back into the country where you are residing. If you are not a citizen of that country, you may need a permanent residence visa or at least a visa that allows multiple entries to be allowed to return. This includes hours-long day trips at border towns.
On the other hand, your residency does matter where you go to obtain the visa.
A visa summary, telling what countries you'll probably need a visa for, can be useful at the early stage of planning a trip. For example a long distance overland journey may be simpler to arrange if most of the route passes through countries that you don't need to get a visa for. However these lists are difficult to keep up to date, and as a summary, they may miss some details which apply to your particular situation.
We don't have a summary here, but see:
- Category:Visa requirements by nationality for summaries on Wikipedia.
- UK nationals can use the advice of Foreign and Commonwealth Office, with a complete list of countries around the world.
- U.S. citizens can visit a website maintained by US Department of State for initial indications of a need for visas.
- Most nationals can use the IATA Travel Centre for initial indications on whether a visa is required or not. This is what airlines use to determine whether to let you on the plane.
In advance or at point of entry?
Many popular travel destinations provide visitors for tourism with a free short-term visa on arrival stamped into their passport. Others will accept payment and issue a visa on arrival for a fee. Still, others require an application and visa to be in your passport in advance, and prior to boarding any flight.
If visas are issued upon entry, this might be at only some points of entry. For example, in developing countries, major airports might issue visas on arrival, but some land borders may require a visa issued in advance or vice versa.
Some countries, particularly those that want to attract tourists, offer an e-visa system. An Electronic Travel Authorization (ETA or "e-visa") is obtained online and often has a fee. This is much easier than mailing forms, passports, and payment, but usually falls short of the free short-term visa on arrival. Many countries use the e-visa method: Australia, Canada, Kenya, India, Myanmar (Burma), New Zealand, Sri Lanka, Turkey, and the United States for example. Not everyone needs an e-visa (such as citizens of USA and Canada visiting each other's countries), while some nationalities and ethnic groups (e.g. Pakistanis entering India) still must use the traditional paper forms where overstaying or security is a concern. Even though these e-visas are usually granted instantly, secondary processing can take many weeks. Always confirm your visa before buying non-refundable tickets. When filling in the passport number, be careful not to confuse ones and I's or zeros and O's. This could result in the application being rejected. Also, if the passport number has any non-English characters, refer to the FAQ page of the e-visa application site or contact the consulate or embassy.
When visa fees are charged they can vary according to your nationality, the number of times you will enter, the length of stay or validity, the purpose of travel and sometimes how and where you apply. If visas are available at the border, it might be significantly cheaper to get one there, rather than acquiring one in advance.
Should your own country charge a fee for visitors of your destination, reciprocal visa policy and fee may apply. Sometimes particular nationalities are charged additional visa fees for reasons that are difficult to ascertain, with country groups assigned to particular fee bands.
If you are traveling around border regions you can often reduce visa fees by structuring your movements around such fees, taking an open jaw flight into one country and out of its neighbor can avoid multiple entry fees. If taking a quick visit to a neighboring country, keeping your trip to a single day can often avoid fees too.
Children are sometimes charged a reduced fee or no fee at all. The maximum age of the child can vary from under 12 up to 18.
The embassy or consulate of the country will also tell you how your payment has to be remitted. At the border, it is possible that the visa can only be purchased with cash. Often the cash has to be in the local currency, but some insist on a specific "hard" currency (commonly U.S. dollars).
Visa fees are always charged up front as a cost of the administrative processing of the visa application. Simply put, this is the fee that the consulate charges you for them to take the time to look at and consider your application. Once the visa is granted, the fees are never refundable if you decide to go somewhere else or your trip falls through. Being denied does not get you a refund either.
Countries may request applicants to go through third-party agencies (e.g. VFS, TLS Contact). In such a case, applicants may have to pay a service fee to the third party in addition to the visa application fees. Likewise, some countries do not charge fees for the visas themselves (e.g. Japan, South Korea) but may require applicants to go through third parties that may charge their own fees.
Classes of visas
Visas come in many forms, so it is very important to obtain the appropriate visa for what you intend to do. Attempting to enter a country without the correct visa can see you refused entry, deported, or even barred from future reentry. Not all countries offer the same types of visas. Here are some of the most common varieties:
Tourist visas are issued to persons wishing to travel to a country for sightseeing or vacation; most are good for one to three months, though some are for as little as 14 days and some last five or ten years (for periodic visits, usually maximum 1–3 months per visit). Employment is generally not allowed.
Many countries have additional requirements. Many will not allow entry on a one-way ticket; you must show officials a return or onward ticket to be admitted. Nepal does not much want tourists who only hang around in Kathmandu; they issue only short-term visas, and to renew it for a longer stay you must present a receipt showing you have been trekking with a licensed guide agency.
Many countries offer a visa-on-arrival, typically issued at the airport. However, this depends on both the destination and what passport you hold. In general, visitors from richer countries are more likely to be offered this. Countries such as China do not generally offer such visas.
Transit visas are issued to people passing through the country without a significant stay, normally for anywhere from 24 hours to ten days.
Some countries offer sterile transit through their airports; you are not considered to have entered the country, so you need not go through immigration formalities or have a visa. Others do not permit this; for example, the US has no sterile transit and requires all passengers to go through immigration control, and some to have a visa, even at a refueling stop. This is one reason for avoiding travel through the United States.
Business visas are issued if one needs to conduct financial transactions in the country, sign contracts, attend training or meetings, and a plethora of activities in connection to one's work or profession back home. Employment in the host country is forbidden.
Student visas are issued to those who wish to undertake a course of study in another country. Proof of admission, enrollment, proficiency in the local language, and evidence of sufficient funds to cover your school fees and living expenses are necessary. In some countries this visa does not allow employment; in others, it does but usually with some restrictions. See studying abroad.
Work visas are permits allowing one to hold a paid job in the destination country for a period of time. These are notoriously hard to acquire unless special arrangements exist between your home country and the destination country. This is because the primary requirement to be considered for a work visa is that nobody in the employer's local job market is qualified and willing to do the job the employer needs to fill. It might be slightly easier for you to get a working visa if you possess an advanced degree (i.e. MA, MS, Ph.D.) from a reputable school or an undergraduate degree with extensive and substantial related experience. Teaching English or other languages is also often an exception; various countries want native speakers for that. If the work visa does not automatically allow you to permanently immigrate (i.e. you're a contract worker), the visa will usually be restricted as well to a particular employer and job type. See working abroad.
Working holiday visas are work visas that allow short-term jobs to be undertaken to subsidize a vacation. These are based on bilateral arrangements between pairs of countries which allow people from either to work temporarily in the other to fund their travel. Typically they have an age limit (often under 35) and a duration limit (often up to a year). Check with your own government to discover which countries yours has such an arrangement with.
Religious pilgrimage visas, such as visas given for the Hajj, entitle the bearer to visit a religious shrine or site. These are common in most Muslim countries.
Religious worker/Missionary visas permits you to enter the country for the purpose of practicing, maintaining, and advancing your religious beliefs. Only available in countries that have "freedom of religion," or if the official religion of the state is the same as your own. Even countries that otherwise permit or tolerate the practice of your religion may have additional requirements for indigenous peoples, though this may apply to other professions as well, such as anthropologists. Some sort of divinity degree and accreditation is usually required for long-term visas. For countries that have no such visa, entering on a tourist, student, or work (e.g. English teacher) visa can be quite risky.
Retirement visas allows you to reside in a country indefinitely, so long as you abide by the law and don't seek paid employment. A minimum amount of annual retirement income, currency conversion, expenditures and/or bank deposits in the host country may be required. See Retiring_abroad#Visas. In addition, many countries impose a minimum age of around 55 or so.
Immigrant visas or Permanent residence visas permit one to resettle in a country. These visas are generally the hardest to obtain, with stringent requirements. Common criteria that have to be fulfilled for obtaining such visas include investing a large sum of money in a local business, living in the country continuously on a work visa for a certain period of time, or being married to somebody from that country. In addition, many countries will require you to have a clean bill of health and no criminal record (minor traffic violations excepted).
Fiancé visas similar to immigrant visas (above), give you a few months to get married in the host country, and then change to a permanent residence visa. If the marriage plans fail, you must exit the country by the expiration date. The U.S. has a lifetime maximum of two fiancé visas without a waiver, and this only applies to the U.S. host (not the fiancé).
As the mechanics for long-term and work visas can get complicated, it may be advisable to engage the services of an immigration attorney to properly assess your eligibility for the desired type of visa, and facilitate the necessary paperwork. In some cases the employer will handle this.
Conditions to get a visa
Some countries require that you must have at least 6 months of validity remaining on your passport. In some cases, the requirement is six months from your date of entry, rather than the visa application date. In other cases (such as applying for Chinese visas), the six months are counted from your planned departure date from the country you're visiting (for example: if you are planning a four-month stay your passport should be valid for at least 10 months from your entry in the country). For this and other reasons, a visa application must usually include proof that you intend to leave the country (and that you won't stay longer than allowed): an outbound international airline reservation is usually enough.
Having a criminal record in your home country may be grounds for denial of a visa. It can also be grounds for refusal of entry when traveling without a visa. This is true even for countries with land borders and no visa requirement for tourists such as at the U.S.-Canadian border. To avoid disappointment, it's best to inquire at the nearest embassy or consulate. In some cases, this information might be on the host country's web site. However, it is still best to inquire about your particular situation, as legal matters can be enormously complex--especially in an international context. Differences between American and British English can come into play as well. Do not use generic crime-related words on an application without fully explaining the details. For example, "robbery" could mean anything from stealing something surreptitiously to holding people at gunpoint demanding their belongings. In short, the host country's definition of a certain crime may be totally different from your own.
If the crime you committed in your home country is not considered a crime at all in the host country, usually, but not always, it won't be an issue. However, it becomes dicier if the only reason it wouldn't be a crime is in the numerical details (such as different standards for blood-alcohol levels, a person's age, or amount of money involved)
It's usually best to apply for a visa in advance should you have a criminal record, as being refused entry at the border or airport is considerably more inconvenient. The host country's criteria for time served may be based on the penalties imposed if the crime was committed in that country. If you have declared your criminal record during the visa application and it is granted, then you are unlikely to be refused admission for that reason at the border crossing.
It is also important that you have not violated the terms of any previously-issued visas to you. In other words, you should have not for instance overstayed by even just a single day or worked on a tourist visa. Doing so makes it very difficult to re-apply and be granted another visa.
Being in a stable financial and employment situation is strongly advised as it can demonstrate that you have less reason to potentially overstay or violate your visa. Hence, be ready to procure financial documents from your bank, certificate of employment, affidavit of support, etc. in advance in case the consulate requests this. If you are applying for a work or immigrant visa, the financial situation of the prospective host or employer will also be very important.
Third-party agent concerns
Be extremely careful with persons or organizations whose services you wish to engage to help you apply for a visa. Some of them claim that they can get you a visa quicker than conventional methods. If a proposition sounds too good to be true it probably is. You will be held liable for whatever fraud or misrepresentation they commit in your application. In addition, if you commit fraud either by yourself or with the help of your agent, you face the following consequences:
- ban from re-applying for a visa which can last for the rest of your life or for very long periods (not less than five years)
- criminal prosecution and jail time in the country which you committed it in
- loss of the money you paid the third-party
If you don't have a document to prove your eligibility, it is better to explain its absence than present one that is fraudulent or forged (issuing authorities often have full-time, professionally trained staff assigned to verifying documents). Most agency fraud is related to visas for employment, immigration, or education rather than business matters or a short vacation. That said, there are many legitimate visa processing companies that assist persons who reside far from the embassy, find the matter too complex, or live a busy life. Of course, it's a good idea to check their reputation first.
Entry without a visa
Some countries permit certain nationalities to enter without a visa, but other conditions may apply for entry and the stay. For example, all nationalities in the European Union can generally freely travel from one country to another with almost no restrictions. Members of the Association of Southeast Asian Nations (or ASEAN) allow visa-free access to each other for business and tourism purposes. The United States allows certain nationals to enter under the Visa Waiver Program for tourism and business only, provided they fill out an online application prior to their arrival. Australia, Canada and New Zealand also have a similar system, in which certain nationals may apply online for an electronic visa without having to make a trip to the embassy.
Even when there is no immigration or customs control at the border, such as normally in the Schengen area, you still might not be allowed to enter. Although most people visiting the Schengen area have a Schengen visa, some have a visa or residence permit for an individual country, which may or may not allow free passage to other countries. You might get caught in a random check elsewhere.
While crossing borders usually requires a passport, there are some cases where nationally issued photo ID of certain countries is enough for entry into others. This may save you money on a passport or be handy when trying to avoid certain stamps in your passport as Egypt allows German citizens in with a national ID and two separate passport size pictures.
Some countries still do not require transit visas for transits of certain lengths, such as Saudi Arabia (in an airport, 18 hours), China, and the United Kingdom (only applies to certain visa required nationals).
If your destination allows others of your nationality in without a visa, don't automatically assume that you won't need one, especially if you are planning to stay for extended periods (i.e. to work, study or immigrate either temporarily or permanently). In fact, it's a good idea to inquire if you're traveling for any reason other than being a typical "tourist". This includes visiting family or friends, getting married, speaking or performing to an audience or congregation (even if unpaid), journalism, research, professional photography, etc. Check to make certain of your status before entry. In some cases, you may, in fact, need a visa, in others, you may simply need to bring more documentation to the border. Also, you may need a special visa if you visit remote areas where indigenous people live who are not part of mainstream society (e.g. parts of the Amazon Basin, remote areas of Africa, the Andaman and Nicobar Islands off the coast of India, etc.)
Obtaining the visa in advance
Your first stop on your journey to get the valuable visa is the website of the immigration authorities, foreign ministry or embassy (see below) of the country or countries you wish to enter. They will provide the list of documents you need to get and specific procedures you need to undergo for your case. They will also provide instructions on how to apply in case they are not directly represented in your home country.
In the case of short-term visas, the following documents are usually needed:
- passport (always required; sometimes including additional photocopies of your bio-data page and other previous visas/stamps)
- financial documents (e.g. tax returns, bank certificates, bank statements)
- employment or school certificates (if applicable)
- affidavit of support with sponsor's supporting documents (if applicable)
- travel details including flight reservations (however don't purchase the tickets yet unless and until the visa is issued), hotel reservations, invitations and itineraries
- bank deposit or payment slip (if instructed to pay in this method)
- birth certificate (sometimes not needed, since your passport is based on this)
Once you have all the necessary documents, you can start filling out the application forms. However, don't write or mark anything until you have read the entire application. There can be some very fine line choices such as "I'm part of a delegation" or "I'm accompanying a delegation."
In some countries, applications are only possible online, while in others, it has to be hand-written or type-written. In the case of the former, you will have to print-out the submitted application form. Next, you can set an appointment using the website or phone number assigned by the visa-issuing authorities. The country you are applying to will also indicate how you should remit your payment and whether this happens before or during the appointment. A commercial third-party accredited by the embassy/consulate may handle administrative aspects of your visa application (i.e. you could be dealing with them in submitting your application rather than the embassy/consulate itself) but they have no influence over the outcome of your application. The embassy or consulate will tell you if you need to come for further interviews.
To get a visa, you have to deal with an embassy or consulate of the destination country. Embassies are normally in the national capital city. Consulates are a branch of an embassy, usually far away from the capital. For example, Los Angeles and San Francisco have many consulates, as these are major cities thousands of miles/kilometers away from Washington, DC. Generally, small countries have no need for consulates at all, with the possible exception of a neighboring country having a few consulates to reduce the load on the main embassy, and making it more convenient for its citizens who are just across the border. An "honorary" consulate typically cannot issue visas or assist in legal matters, but will refer you and can sometimes forward visa applications to an embassy or regular consulate (usually in a larger city). They mostly deal in information about tourism and local culture and might consist of nothing more than a room in someone's home.
In some cases, only your designated consulate or embassy will process your visa, based on where you live. For example, if you live in a small city in the USA and are visiting Washington, DC, you might not be able to apply for a visa there if the destination country has a consulate closest to your home. This is even more likely to be a problem if you visit an embassy in a third country where you are not a resident (even if it's the closest). For example, Ottawa, Canada, has dozens of embassies and can be less than an hour's drive from upstate New York. However, they may or may not be able to help a U.S. resident. Be sure to contact the embassy ahead of time to avoid a wasted trip. On the other hand, if your travels have already begun, and you want to visit a nearby country which requires a visa, contact the nearest embassy or consulate. There's no guarantee, but they may be able to help.
A further complication can occur if you have documents that need to be authenticated by the destination country prior to travel (not common for tourist visas unless getting married). If the documents originate from a different part of the country from where you reside, they may have to be shipped to whichever consulate (or main embassy) that handles their particular region of origin. The most common example of this is a birth certificate issued by another state or province. If the official languages of the host country are different from that of the documents, they may need to be translated. The embassy will have a list of approved translators that you must use.
For most countries, begin the visa process at least four weeks prior to your trip for ordinary tourist visas (months for employment visas, unless your case belongs to some quickly processed class). Applying in time will hopefully let you complete all of the necessary work in advance of when you desire to leave. Some countries allow for quicker turnaround times, but this comes with the obvious risk of missing your flight or paying a substantially higher fee. If you cannot visit an embassy or consulate in person, the visa may sometimes be obtained by postal mail or air express document shippers (FedEx, DHL, UPS, etc.). If this is not allowed or you prefer the added convenience, there are usually visa processing services in your home country which deal directly with the embassy. As much as possible, start the application process at the earliest possible opportunity. Processing of your application can take weeks but some countries may have priority processing available.
A transit is when you enter a country for a short period for the purposes of transferring to an onward transport leaving the country again.
Working out which rules apply to transit can often be more complex than working out the visitor visa requirements. Some variables include the length of your stay (often measured in hours), and whether you will need to leave the sterile transit area of an airport. Some countries that require visitors to have visas will allow transit without a visa under some conditions but may require a transit visa if these are not satisfied.
If the transit entry conditions require you to stay in the sterile area during transit, you have to consider your luggage. Some airlines will not check your luggage through to your destination. This can be because they are a budget airline operating on a point-to-point basis, or even with multiple full-service airlines without the correct affiliations to transfer luggage between them. Countries which don't normally require visas for a sterile air-side transit may require you to procure a visitor or transit visa to collect your bags since you have to pass through the immigration control to enter that country to commence the rest of your journey by checking-in again by yourself. You should consider any visa application fees when comparing travel options.
Some airlines that don't normally offer to check luggage through to a final destination when fares are booked per sector online, may do so for the same flights if booked as a connecting flight by a travel agent, or as a codeshare.
After obtaining your visa
First, check to see if all the information printed on the visa sticker is correct (from your name to the type of visa). The usual information printed on the visa is as follows:
- date of birth
- passport number
- validity dates*
- number of entries allowed*
- type of visa
*For validity dates and entries allowed, even if you applied and paid for a longer period, the consul, at their discretion may actually give you a shorter period and fewer entries if they are not fully satisfied that you will potentially comply. It is typical for the first time successful visa applicants to get single entry visas.
Having a valid visa does not automatically guarantee entry into the country that issued the visa. When you land at the host country, immigration officers will check once again to see that you are still eligible for that visa. The reasons and circumstances that gave you the visa in the first place must still exist. If traveling as a tourist or a business visitor, make sure you have a return or onward ticket and contact details of your host (including their full address). Some countries may also require tourists to bring sufficient cash — Thailand is a prime example. For another status, have all the documents related to the purpose of your trip in order. Don't bring documents or items a normal traveler won't bring. You may be denied entry and your visa may be canceled if you are unable to demonstrate your eligibility or qualifications for your visa.
From the time the visa is issued to the time you leave the host country, you are responsible for complying with all the terms and conditions of your stay. If on a multiple-entry visa with a long validity period, the following constitute grounds to automatically invalidate your visa once these are uncovered:
- staying beyond the period given to you
- performing an activity not allowed by your visa or immigration status (e.g. work or study on a tourist visa, work more than the maximum number of hours on a student visa)
- changing of circumstances that got you the visa in the first place (i.e. they no longer exist)
Length of stay and validity dates
Depending on the country, the length of authorized stay may or may not be printed on the visa and instead be given at passport control. In relation, the validity dates may have different meanings depending on the country.
In the United States, for example, the validity period is simply the window in which you can travel to that country. It is not connected to the allowed period for which you can stay in the country. This means you can enter on the last day of your visa but still receive and be allowed up to a full 6-month period in which to stay there. The actual deadline for you to exit will be stamped in your passport by passport control officers - make sure you leave on or before this date.
In other places such as the United Kingdom and most Schengen countries, the last day of your validity period is the deadline for you to exit the country. While the maximum period for you to stay may be printed on the visa, you will either be given that period to stay or until the last day in which your visa is valid - whichever is shorter. This means while you can enter on the last day, you must also exit on that day.
Extending stay and changing status
If you are looking to extend your stay or change your immigration status, apply at the immigration service center of your host country. However, this is not always possible depending on the rules of the immigration status that you used to enter the country with. For instance, those who entered the US under the Visa Waiver Programme are not permitted to change status or extend their stay at all. When it is not allowed to change status in the host country, you must exit first and apply at your home country (make sure you leave before time is up otherwise you will have a difficult time getting that new visa). Other than checking past compliance with immigration history, your application for a different visa is independent of your past visa applications and will be viewed on its own merits.
Many foreign citizens who work or live in a country where it is difficult or simply not possible to extend a visa will be familiar with the visa trip. For example, a foreigner working in Maputo, Mozambique can get a 1-month visa on entry to the country very easily, but extending this is not an option. So the trick for many is to take the short car journey into South Africa (where many citizens can enter without a visa), do some shopping and then return, picking up a new Mozambique visa on the way.
If your visa (or entry permission) expires before you leave the country, you have overstayed and could be punished. The best advice is not to do this. Should there be any chance of overstaying your entry permit/visa, you need to contact the immigration service of the host country for advice as soon as possible. Punishment for overstaying varies from nothing to having to 'tip' the immigration official, to fines, banishment, or even imprisonment. Changes can occur at any time with little to no notice. Showing up at the international airport with an airline ticket in hand often will reduce any punishment in comparison to being caught elsewhere. (Especially the inconvenience of being temporarily detained without notice, even if other penalties are the same.)
One trick to reduce your chances of overstaying your entry permission is to say you will be staying longer than you really are when you enter the country. Usually, you will fill out a form when entering, saying when you will leave. Add a few days or a week to the exit, but nothing that would put you into a more costly or complex type of visa. If the immigration policy is only to grant entry permission for the actual length of stay, you can gain some time with this, and save a trip to the immigration service. Caution: for air travel, officials may want to see your outbound ticket, which will have the date of departure on it.
Should you be unexpectedly hospitalized, or it is impossible to leave the country due to a natural disaster, riots, government overthrow, terrorism, etc., contact your embassy immediately.
Russia, Schengen countries, Saudi Arabia and some other countries have an exit visa requirement. This should not be confused with the exit visa that some former Soviet republics countries require their citizens to have to validate their passport for international travel - see the Passports page for more on those. Those who are required to have a visa to enter these countries must also have a visa to leave them. It is not as dire as it seems, however; only certain classes require a Saudi exit visa; Russian tourist, business, and transit visas are entry-exit visas; and so are Schengen short-stay and long-stay visas.
Countries such as Saudi Arabia require that foreigners have an exit visa before they can leave. Getting in with a work visa requires a Saudi sponsor and getting out requires the sponsor's signature; this can lead to a variety of problems. Foreign teachers at a university may find they need half a dozen lesser signatures (no overdue library books, no outstanding advances on pay, etc.) before they can get the official signature to get out. At one point in the 1980s one problem — female domestic employee claims various sorts of abuse by an employer; he says she is lazy and disobedient and refuses to sign exit papers — became so common that the Philippines government forbade their citizens to take such jobs in Saudi Arabia.
However, if for any reason, your visa or permission to remain expires before you leave, you are normally required to obtain an exit visa. This requirement may be waived under certain conditions. For example, the Russian exit visa requirement may be waived in case of minor delays due to unforeseen circumstances such as illness or flight cancellation.
If you are required to obtain an exit visa, do so well in advance of your departure. It can take as many as three weeks to obtain one.
In any case, upon departure, immigration officials in most countries will check your documentation, and, if the country uses some kind of migration control document (e.g. entry card stapled into passport), they will collect that document. If you lost your passport during your stay, these will probably have to be verified or replaced.
Registration is an additional requirement for the visa process. In some countries, you must register your presence and address where you are staying with the local authorities. This might require filling out a form with the local police or a visit to the immigration offices. In many countries with such a law, local hotels will handle the registration (make sure to ask). In other cases, only those staying outside of tourist accommodations need to register. However, this makes the law much more obscure, so find out beforehand.
The registration may be an additional stamp in the passport or a piece of paper with an official stamp. Leaving a country without registration can be a problem. You may well be turned back at the immigration counter and told to go to register, which will probably mean missing your flight.