In terms of productivity per dollar probably, but in terms of absolute productivity I doubt it.
Maybe delegating to them instead of paying them to watch you.
You can't delegate software engineering to a rando off Craigslist, especially if you're an employee. (If you're a contractor and your contract allows you to do that it's just irresponsible, if not, it's a fireable offense.)
i can delegate a bunch of other things, have you heard of executive assistants?
Depends if you’re optimising society or optimising an individual.