WP.22 Application to Change or Add a Category of Work in a Work Permit — Thailand

WP.22 (บต. 22) is an application to the Department of Employment (DOE), Ministry of Labour, to change the items in a foreigner’s work permit when the category of work is changed or a category is added.

The form covers three cases: changing another category to labour work (กรรมกร) or adding labour work; changing another category to shop sales person (ขายของหน้าร้าน) or adding shop sales; changing labour or shop sales work to another named category, or adding another category. Only one option is chosen.

The form is bilingual (Thai and English) and has 4 pages: the application, the employer’s commercial and tax details for shop sales, the checklist of attachments, and a page for official use only.

• a foreigner who already holds a Thai work permit and whose category of work changes or needs to be added, together with the employer;
• whether a particular foreigner may do labour or shop sales work depends on Ministry of Labour rules — check with DOE before applying;
• the form is submitted to the Department of Employment: in Bangkok an employment office for foreign workers, in other provinces the provincial employment office; check which office handles your permit;
• the fee and processing time are not stated on the form — check them with the office.

• title, name, nationality, passport number, date of birth and age;
• address in Thailand, telephone, fax and e-mail;
• work permit number, province of issue, employer named in the permit, expiry date and permitted nature of work;
• the employer who will employ the foreigner: same as in the permit or new, juristic or natural person, registration or ID number, and the location of the workplace;
• for shop sales only: the employer’s commercial registration (or licence), income tax filing date, annual income and tax paid or exemption;
• the change requested, whether the attachments are complete, and the date of signing.

• a copy of the passport or document in lieu of passport with evidence of permission to enter Thailand;
• the work permit;
• 3 photographs;
• the employer’s identity card or other official document (natural person), or a copy of the juristic person certificate, Foreign Business Act licence or registration of a foreign juristic person;
• for shop sales: a copy of the commercial registration or licence for commercial operation, a copy of the personal or corporate income tax return, and the social security contribution list or a Thai employment certificate.

The office may ask for additional documents — check with it before submitting.

1. Open the chat on this page and say which category of work you want to change or add.
2. Answer the questions or send photos of your passport and work permit — the assistant fills the boxes and ticks the attachments.
3. Check the fields, download the PDF, print, sign and submit it with the attachments at the employment office.

Official WP.22 form on the Department of Employment website: doe.go.th (PDF); foreign workers section: doe.go.th/alien. Checked on 2026-10-08. This is not legal advice.