Chronological order Union List (based on registered year) - 2006
- General Motors Workers Union Thailand
- Premium Steel Processing Labour Union
- Isuzu Auto Engine and Parts Workers Union of Thailand
- KDK Fujikura Workers Union
- Ceramics Samphan Workers Union
- Huawei Technology (Thailand) Labour Union
- NTN Thailand Labour Union
- Siam Electric Labour Union
- New Jo Ho Ku Workers Union
- Saeng Charoen Foundry Labour Union
- Denborah Services Thailand Labour Union
- SME Banking of Thailand Trade Union
- DYNAMETAL WORKER'S UNION
