N.H. Rev. Stat. Ann. § 98-A:6

An individual working on a part-time basis shall not be eligible to utilize either sick or annual leave but at each anniversary of employment should the total working time during the preceding year amount to the equivalent of an amount of time specified in the applicable collective bargaining agreement and the personnel rules, they shall be paid all accumulated annual leave not in excess of that which may be allowed in rules adopted by the division of personnel.