Recently while working for a painting company, my crew(2 others plus myself) was offered a bonus on a supermarket we were painting, if the job came in at 40% or better. The job DID come in at 40% or better (employer admits it came in at better but would not tell us the exact number) and he refused to give us the bonus. After 3 months of complaints and questions from us (my crew and i) we were all terminated on the grounds that he was "tired of listening to us piss and moan about the bonus". Do we have any kind of case here or do we just walk away empty handed?