...and stipulate that the employee may work for any non-competing entity while still being paid by their old employer. This way the employee can make even more

...and stipulate that the employee may work for any non-competing entity while still being paid by their old employer. This way the employee can make even more than their original wage, to offset the facts that they aren't being allowed to work in what is likely the job they'd find most fulfilling, and they aren't making as much career progress while working in a different field.