Hi,
I think the best way to address this is the following:
PROFIT SHARING or COMP TIME.
Comp time is extra time worked over what you would normally work. You can use the comp time for time off or cash it in when it hits a certain limit or period..do not allow it to go over 200 hours in a quarter or allow it to be carried over to the next year..
profit sharing is giving the employee a slice of the pie..pay dividends to the employees and recognize the ones that excell by providing incentives like tools or safety awards..
An employee must be compensated for his time so I do not see where you are giving anything away. If a guy works more than 40 hours then pay him for it unless he is on a salary.
-regards
Mustang