What could skycaps, bank loan officers, bartenders, phone company engineers, financial research associates, exotic dancers, drugstore assistant managers, computer technicians, janitors, paramedics, delivery truck drivers, exterminators, waiters, cable TV repair workers, and chicken processors all possibly have in common? Well, at least this: Each group sued their employers over pay issues in 2010.

And for that they share a special place—they are part of why wage and hour lawsuits under the Fair Labor Standards Act jumped to record levels last year. Workers filed nearly 6,800 suits, or some 700 cases more than the year before. Most of these were filed as collective or class actions, even though the number of nonemployment class actions remained stable.