N.H. Rev. Stat. Ann. § 282-A:155

The courts of this state shall entertain actions in the name of the commissioner to collect benefits, contributions or interest thereon for which liability has accrued under the employment security law of any other state or of the federal government. The commissioner shall have the authority to collect any such debt by civil action in any manner provided for the collection of contributions in RSA 282-A:141-156.