The state pension age in Thailand is 60, at which point Thai nationals become eligible for a monthly Old Age Allowance (OAA). You must be at least 50 years old.You must not have a criminal record in Thailand or your country of nationality or residence. In Thailand, retirement is deemed to be a termination of employment, entitling employees to a severance payment. Retirement visas for Thailand are available to foreigners 50 years of age or older. Both non-Thai national applicants must be 50 years or older. Issues in the definition of benefits. The Retirement Visa, or NonImmigrant OA Visa, is for expats aged 50 and up looking to retire in Thailand. 6) At the termination of employment, Company A has to pay retirement benefit to Mr. A at the rate prescribed in the Labor Protection Act (i.e.