Each manager is responsible for cash handling, product quality and service on thier shift and for cleaning and making sure the kitchen is ready (prep) for the next shift.
In addition to that, my GM writes the schedule and buys food to be ready for the sales forecast that I produce.
One Asst is responsible for the delivery vehicles: inspections, oil changes, cleaning etc.
2nd Asst is responsible for kitchen equipment: maintainance, periodic cleaning, repairs etc
3rd Asst is responsible for major weekly cleaning projects like the walk-in, dish area, upstairs storage, light covers, windows etc.
All of them make $12 an hour to start with. If the manager runs the schedule, food buy general smoothness of operations well he gets a $4 per hour bonus on straight time (not on OT). If the Assistant managers get their extra responsibilitites handled smoothly without having to be chased they get $2 per hour on straight time.
On top of that, I pay ~10% of profit in bonuses distributed roughly 40% to the GM and 20% each to the asstistants based on my perception of how they contributed. I figure it hourly though, so an assistant might get another $0-4 per hour according to the season. During the holidays they made $18 per hour and the Manager made about $22. During the off season, they will only get the special responsibility money as we make no profit during the slow time.
When it is all said and done my manager will cost me about 7-8% of sales.