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Visa and Work permits
Visa and work permit requirements
With very limited exceptions (including for diplomatic or governmental work), foreign nationals require both a work permit and a long-stay visa before commencing work in Thailand. Although the work permit and the visa are issued by different authorities, the two are, in practice, inter-related and are usually valid for the same periods.

Generally, a foreigner applying for a work permit must already have a non-immigrant visa (not a tourist visa) issued by a Thai embassy outside Thailand. There is a distinction between a visa which is issued from outside Thailand and which allows a foreigner to enter Thailand, and a permit to stay, which is issued once the foreigner enters Thailand. The period of the permit will depend on the type of visa used to enter Thailand. A foreigner obtaining a visa on arrival is generally given a 30-day permit to stay whereas a foreigner entering Thailand on a nonimmigrant visa is generally given a longer permit to stay depending on the type of visa obtained. Once a work permit is granted, the non-immigrant visa supports a long-stay visa which should track the period of the work permit (usually one year). Lastly, the permit to stay will be automatically cancelled if the foreigner leaves Thailand without first obtaining either a single or a multiple re-entry permit. Typically, an expatriate worker will hold a work permit, a long-stay visa and a multiple re-entry permit, which are all renewable annually.

Applications for work permits can be made by the employer before the foreign worker enters Thailand, but the work permit will be issued only after he or she enters Thailand. The foreign worker must not commence work until the work permit has been issued. In general, there will be minimum requirements as to the wage of the foreign worker, the registered capital of the employer and the ratio of foreign workers to Thai workers at the employer’s workplace.

Short-term work permits (of up to 15 days) are also available for work which is “urgent and essential”. These types of work permits can be obtained within a day by an applicant who holds a valid visa, but need not be a non-immigrant visa. What is considered “urgent and essential” is not defined in the relevant legislation and, as such, it is at the discretion of the Director General of the Department of Employment.

Companies granted investment privileges by the Board of Investment or the Industrial Estate Authority of Thailand may also receive specific privileges relating to visas and work permits for their foreign workers, including applying different criteria (see below for more details).

One-stop service center
Since 1997, the One-Stop Service Center has been established to expedite and facilitate the issue and renewal of visas and work permits. The center is staffed with representatives from the Board of Investment, the Department of Employment and the Immigration Bureau and processes both visa and work permit applications from a single location. The center is only available to expatriates who satisfy certain conditions.

Recently, changes to the Alien Employment Act B.E. 2551 (2008) extended the maximum period for work permits to two years under certain circumstances. However, the maximum period for long-stay visas is still one year.

In addition to the laws and regulations, there are internal rules, practices and requirements of both the Department of Employment and the Immigration Bureau, all of which change regularly and specific advice should be sought in each case.