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Black Hawk Union
Blair-Bedford Central Labor Council, AFL-CIO
Bloomington-Normal Trades and Labor Assembly
Bluegrass Central Labor Council, AFL-CIO
Boise Central Trades and Labor Council, AFL-CIO
Boulder Area Labor Council, AFL-CIO
Brooke-Hancock Labor Council, AFL-CIO
Broome County Federation of Labor, AFL-CIO
Broward County AFL-CIO
Bucks County Federation of Trade and Industrial Council
Buffalo AFL-CIO Council
Building Trades, AFL-CIO
Burlington County Central Labor Union
Butler County United Labor Council, AFL-CIO
Butte and Glenn Counties AFL-CIO Central Labor Council