Probably stands for the "United for the Forced Collectivization of Workers."
The union has opposed actual free choice here in Colorado. Twice. Three times, as last year they were one of a group of unions dedicated to blackmailing businesses into withdrawing support for right-to-work. (That practice of blackmail was recently endorsed by the Democrats on the House State, Veterans, and Military Affairs Committee.)
And now, the union is part of a group, Change to Win, who has sent a letter to banks, and their Congressional regulators, arguing that their taking TARP money abrogates their First Amendment rights. They banks evidently incurred the union's wrath by opposing Congressional attempts to impose card-check on the national level.
So not only do they oppose free choice for workers, they oppose free speech for opponents.