A code monkey is not selling their programming skill to per employer, person is trading hours spent doing work-related tasks for money. Once the agreed amount

A code monkey is not selling their programming skill to per employer, person is trading hours spent doing work-related tasks for money. Once the agreed amount of hours has been filled person can do whatever person want (without reasonable bounds, of course) and does not have to think about per work. If per employer wants per not to program outside of work, per employer could offer a contract stipulating that, but I would expect person to seek a rather sizeable remuneration afore accepting such an offer.