Which Tax and Employer Obligations Apply to My Business? Generally, your tax and employer obligations are established and maintained by the State pursuant to information that you provide in your business registration documents. If you have already registered, you may call the Client Registration hotline at 609-292-1730 for assistance and general information on your tax and employer obligations.  Related questions:  How do I register a new business? How do I change my Tax/Employer registration? How do I end my business? Return to Registering and Responsibilities