Chronological order Union List (based on registered year) - 1981
- Siam Nissan Labour Union
- Carten Box Labour Union
- Mitsubishi Workers Union of Thailand
- Paolo Memmorial Hospital Workers Union
- Thai Fishing Net Labour Union
- Siam Parts and Engineering Labour Union
- Cosmo Industrial Workers Union
- Deesawat Labour Union
- Sino-Thai Workers Union
- Siam Battery Labour Union
- Srisaket Garment Workers Union
- Siam Ricken Labour Union
- Songserm Thai Textile Workers Union
- Leather Products of Workers Union of Thaialnd
- Metro Textile Trade Union
- Toyota Thailand Workers Union
- Thai Carbon Black Labour Union
