That's where the expectations system comes in. Are they meeting their expectations? Then they're doing as much work as they're supposed to. Not meeting them? Th

That's where the expectations system comes in. Are they meeting their expectations? Then they're doing as much work as they're supposed to. Not meeting them? Then there's a problem, either with them or with the expectations. If they're meeting expectations and you feel they're not working enough, then that's not their fault; it's the fault of the people setting expectations.