Surachai told DVB that migrant fishermen are frequently threatened by Thai authorities and bosses if they raise their concerns.
Discrimination against workers standing up for their rights in Burma’s garment industry was highlighted this month after a union leader was fired at a factory supplying fashion brand H&M.
A factory boss has agreed to compensate Burmese workers at a motorcycle helmet factory in Bangkok after the migrants staged a one-day strike.
Burma’s growing industrial workforce is becoming increasingly unionised and assertive.
A Facebook post that alerted a group of Burmese migrants to their own exploitation has triggered a landmark case on the rights of foreign workers in Thailand.
Thousands of girls from poor families across Burma work as maids for wealthier households, and often face gruelling working hours and abuse.