Chronological order Union List (based on registered year) - 1979
- Bangkok Bank Workers Union
- Philip Semi-Conductor Workers Union
- Siam Intercontinental Workers Union
- Fageeb Workers Union
- Sukoson Masda Auto Industry Labour Union
- The Oriental Hotel Workers Union
- International Oceanliners Workers Union
- Siam Foods Labur Union
- Siam Multi Service Labour Union of Thailand
- Thape Pattana Paper (Samphan Thanachote) Labour Union
- K Kattan Textile Workers Union
- Chemical Rasin Industry Labour Union
- Royal Ceramics Saraburi Workers Union
- Siam Iron Labour Union
- Saha Mosake Sara Buri Labour Union
- Siam Chemical Industry Labour Union
- Yuasa Battery Workers Union
- Kang Yong Electric Labour Union of Thailand
- Aluminum and Metal Products Workers Union
