Consider it as a ratio WQ:T where "WQ" is the Work x Quality product and T is the Time of employment. You're saying that T should be a constant and include time

Consider it as a ratio WQ:T where "WQ" is the Work x Quality product and T is the Time of employment. You're saying that T should be a constant and include time an employee isn't expected to be working, but WQ is fair to vary. Essentially you're adding to T even when the employee is expected explicitly to not add to WQ. So in my opinion it's not fair game.