A-line, I don't know, I think you'll find your employees arguing over who gets the easier jobs. Also, encouraging employees to complete jobs in the shortest amount of time is not conducive to good workmanship. I think a boss who communicates well with his employees will be 99% sure of who is doing a good job or not. You should award bonuses based on your profit for the month/ quarter or year. But above all........Shout your employees a beer on friday nights and don't talk aout work while your having those beers.