What can we ask under the New Jersey Sick Leave Pay Law?

Q: “Regarding the newly enacted NJ Sick Leave Pay Law, it is my understanding that employers cannot ask employees about the specific reason for using NJ Sick Leave. However, how does a supervisor establish whether the days qualify for NJ Sick Leave pay or not? If an employee just asks for a day off, can the supervisor ask if it falls under one of the qualifying reasons? We have a number of temporary workers who are now entitled to this paid time off and we are being cautious about what to ask, but we also need to know if the time off requested is covered.” Monica, New Jersey