I'm on salary with my employer. They have us punching a clock to see the hours that we work during each shift. We were told that if we work overtime that it would be paid to us quarterly, OR given to us as time off. We were told this would happen depending on the mood of management. We are now told that if work is done early that we can leave early, and that the company will bank this time 'owing back to company'. We have never been told this until now, and because we are salary we shouldn't have to owe, but if overtime is happening, we should be paid such as? Is this legal?