N.H. Rev. Stat. Ann. § 282-A:51

It shall be a condition precedent to the cessation of payment of benefits to any individual that he be given an opportunity to appear in person at a designated office in accordance with the commissioner's rules to be heard relative to his continued entitlement to benefits. His failure to appear within the designated period shall be deemed a waiver of such right, and he shall be bound by the determination unless he appeals as provided in RSA 282-A:48.