Chronological order Union List (based on registered year) - 1999
- Quality Workers Union
- Central Hotel Workers Union
- Thai Printing Workers Union
- Golden Dragon Workers Union
- CNI Workers Union
- Atlantic Labour Union
- PET Thailand Workers Union
- Eurasia 1993 Workers Union
- Ever Green Container Terminal Labur Union of Thailand
- Hotel Samphan Workers Union
- The Union of the Employees of Agrevo (Thailand) Co., Ltd.
- Green Sports Middle Management Workers Union
- Summit and Sheeting Workers Union
- Dragon Handbag Workers Union
- Central Hotel Supervisory Labour Union of Thailand
- Thai Silp Plastic Workers Union
- Glassware Thailand Worekrs Union
- Automobile Accessories Producer Labour Union
- Summit Advance Workers Union
- Pinshine Workers Union
- Thai Summit Laemchabang Auto Parts Workers Union
- Chopla Thailand Workers Union
- Siam Toyota Labour Union
- Bangkok Industrial Boiler Wokers Union
- Bangkok Glass Workers Union
- O and C Navanakhon Labour Union
- Wisawakij Samphan Workers Union
- Toys Industry Labour Union
- Teachers and Officers Rangsit University Labour Union
- Siam City Brassware Labour Union
- VF Workers Union
- Isuzu Fishing Tackle (Thaialnd) Labour Union
- Siam Sintose Labour Union
- Thong Sai Workers Union
- Siam Iron Service Workers Union
- Siam Inter Labour Union
- SIK Labour Union of Thailand
- Thai Sesen Thailand Workers Union
- Thai Fukuv Workers Union
- NBC Labour Union
- Prior Workers Union
- Toyota Transport Workers Union of Thailand
- Textile Industry Labour Union of Thailand
- SIK Supervisory Labour Union
- Sri Thai Food and Beberage Workers Union
- Carten and Printing Workers Union
- Steel Pipe Workers Union
- Toyota Leasing Thailand Workers Union
- Foam and Chemical Industry Labour Union of Thailand
- MC Agro Labour Union
- Country Products Workers Union of Thailand
- Iron Pump and Metal Workers Union of Thailand
- Power Run Workers Union
- R&D Next Technology Labour Union
- TSE Workers Union
- Thai Steel Products Thailand Workers Union
- Thai Chanathorn Workers Union
- PGK Workers Union of Thailand
- U&T Thailand Workers Union
- Ultra Sink and Go Labour Union
- Invented Token Labour Union
- Summit Engineering Workers Union
- Comofashion Workers Union
- TSE Engineering Workers Union
- Dominium Toys Workers Union
- Siam Parts Labour Union of Thailand
- News Time Workers Union
- Produce and Sellig Food Workers Union
- First ST Workers Union
- Alpha Spinning Labour Union
- MSI Machine Labour Union
- TDA Rubber Workers Union
- Mockcum Bangpain Workers Union
- Apiko Hitech Labour Union
