A recent U.S. Department of Labor filing reveals that the National Basketball Players Association spent more than $3.5 million on outside lawyers and consultants during last year’s collective bargaining battle with league management.

The NBA, which locked out its players to strengthen its bargaining position amid the fractious labor negotiations, eventually ended the stalemate by striking a deal with the union in November 2011. Now, the players’ legal costs are a matter of public record, thanks to the Labor Department filing, which was first reported on by USA Today last weekend