Chronological order Union List (based on registered year) - 1990
- Thai Vasco Electronic Workers Union
- Plastic Appliances Workers Union
- Meoi Chen Labour Union
- The Union of the Employees of Chemical Product Enterprise
- Asia Bank Workers Union
- Pipatpong Workers Union
- Johnson and Johnson Thailand Workers Union
- Ruamjai 90 Workers Union
- Dance Man Workers Union
- Thirat Workers Union
- First Modern Workers Union
- Yongsanga Workers Union
- Siam Sharp Labour Union
- Mitsubishi Workers Union of Thailand
- Mitsuva Toys Workers Union
- Asahi Labou Union
- Marcot Workers Union
- Pargarment Workers Union
- Seikoi Workers Union
- Mahasarakam Garment Workers Union
- Thai Peroxide Labour Union
- Thai Sun-ae Workers Union
- Thai Pattanan Iron Making Workers Union
- Summy Sound Tech Workers Union
- Iron Sheet Labour Union
- Ueno Chemicals Labour Union
- Thai Theparak Textile Workers Union
- J & D Workers Union of Thailand
- Jeffer Thailand Workers Union
- Bangkok Dicasting Workers Union
- RS Cannery Labour Union of Thailand
- Thai Rung Textile Labour Union
- Thai Lilly Textile Labour Union
- Wattana Paisal Workers Union
- Siam VMC Labour Union
- Suksawas Kollakarn Labour Union
- SCH Labour Union
- Lion Tris Workers Union of Thailand
- Siam Electric Industries Labour Union
- Namthong Spinning and Weaving Workers Union
- MMC Electronics Labour Union
- Thai Nippon Steel Workers Union
- Uni-Sharm Workers Union
- L&K Labour Union of Thailand
- Toy Producers Labour Union of Thailand
- Kobemickwire Workers Union of Thailand
- Thai Kobe Welding Workers Union
- Sahamit Bleash and Dye Labour Union
- Thai Agri Foods Workers Union
- Wood Workers Union
