"The N.J. Family Leave Act forbids employees on leave from performing services full-time for any employer for whom the employee did not provide those services before beginning FLA leave. An employee on FLA leave may work part-time, but not for more than half as many hours weekly as the employee regularly works for the leave-granting employer. Employers may not forbid such part-time work."

So if you want to work for your current employer, you can, but for not more than half as many hours as you worked before. I had an employee who did this while on NJ Family Leave. You can't work at all for any other employer either full-time or part-time. It's pretty straightforward. You can wrestle with the cash options on your own.