What's the difference between person numbers and worker numbers?
Each person has a single person record in the Enterprise. The person number is the person record's unique ID, allocated automatically or entered manually when you create the record. The person number is required and valid throughout the Enterprise.
Allocation of worker numbers in a legal employer can be either automatic or manual. The number sequence for automatic allocation can be either global or specific to each legal employer. In the latter case, worker numbers may not be unique in the enterprise. When you use a legal-employer sequence, the worker number does not change if you rehire in the same legal employer. However, the worker number changes if you rehire in a different legal employer or globally transfer to a different legal employer.
If you use a global sequence, the worker number does not change when you: