High-tech BOI projects: Thai staffing ratio relief, capped at 3 years

01There is a standard ratio rule, and this is a temporary exception to it

Promoted companies bringing in foreign staff already operate under a standard rule (see Sending Chinese staff to a BOI-promoted company in Thailand: where it's fast, where it stalls): once a manufacturing project's total headcount passes a certain size, Thai staff must make up the majority. But a high-tech project in its early months often cannot find experienced Thai technical talent locally — holding it to the standard ratio from day one would stall the project's ramp-up. For exactly this situation, the Board of Investment set up a separate, temporary transition route.

02The relief schedule: 30% first, then 60%, capped at 3 years

This is not a blanket, indefinitely renewable relief — it is a schedule that tightens year by year:

• Year one — Thai staff must make up at least 30% of total company headcount, running for one year from the date the relief is granted.
• Years two and three — the Thai-staffing floor rises to at least 60%, running for two years.
• Once the relief period ends — the standard ratio rule applies again; there is no further transition allowance.

The total cannot exceed 3 years — this is not a rolling relief that renews indefinitely. Some companies plan their localization timeline assuming that once the relief is granted, it simply stays in effect. It does not: once the 3-year cap is reached, Thai staffing must return to the standard ratio. Build this hard cap into your plan for how long Chinese technical staff stay on-site and when local staff take over.

03Not every foreign position qualifies for this route

The relief is handled differently by position level:

• Operation-level positions (production and technical roles) — limited to positions directly related to the high-tech activity and facing a genuine shortage of qualified Thai candidates; general or support positions do not qualify. The application must include evidence of having actually tried to recruit Thai staff — recruitment records, job postings, recruiter engagement letters — and this evidence needs to be kept from the start of the project, not assembled after the fact. Foreign candidates must also meet separately-set education and experience qualifications.
• Executive- and management-level positions — handled separately, capped at a maximum of 3 years.

Which industries count as "high-tech" for this relief, and the specific education/experience thresholds for operation-level positions, are determined by the Board of Investment together with the relevant authority — not something a company can establish on its own. This page does not list the specific scope; check it against the current official criteria and your own case.

04The relief is not a one-time approval — it is renewed every year

This relief requires an ongoing paper trail, not a single approval:

• Every month, the company must submit social security records through the Single Window for Visa and Work Permit system, so Thai employment can be checked and used as the basis for next year's renewal.
• Before the last day of each relief year, the company must prepare a report on Thai staff training outcomes and submit supporting documents as required, in order to apply for the following year's renewal.
• The 1:1 training obligation — for operation-level relief, the company must design and carry out a Thai staff development plan at a ratio of at least one Thai trainee per relieved foreign position, calculated from the change in foreign headcount between the first day of year one and the first day of years two and three.
• Failing to maintain the Thai staffing ratio, or failing to complete the 1:1 training, means no renewal the following year — this is not a soft reminder, it is a hard consequence.

05What this means if you are planning a high-tech project

For data centers, R&D centers and similar high-tech projects, the localization training plan, the record of recruitment evidence, and the monthly social security filings are best built into the plan from day one rather than added after certification — recruitment evidence in particular cannot be reconstructed after the fact to show a genuine attempt to hire Thai staff that did not work out. Which positions and which industry category can use this route, and the specific education/experience thresholds, need to be checked against the project's current promotion certificate terms and the notices in force — we generally recommend a review with our advisers before filing the position application.