Workers in Thailand are protected by the Labor Protection Act 1998, the Labor Protection Act (No. 2) 2008, the Labor Protection Act (No. 3) 2008 and other related laws.
The Department of Labor Protection and Welfare is organized under the Ministry of Labor and Social Welfare and is in charge of performing and taking responsibilities on labor protection, occupational safety, health, working environment, labor relations, and labor welfare.

An employment contract does not need to be in written and the terms of an employment relationship can be defined by the parties’ conduct. An employment relationship can be proven by an employer’s payroll slip given to an employee or other documents submitted to the Social Security Office or the Revenue Department.