N.H. Rev. Stat. Ann. § 282-A:146

If, after due notice, any employer shall fail to make any payment of contributions or interest thereon, the amount due, with interest thereon pursuant to RSA 282-A:141, shall be collectible by any means provided by law for the collection of any tax due to the state of New Hampshire or to any subdivision thereof, including any means provided by RSA 80:2. Tax warrants referred to in said chapter may be signed by either the commissioner of the department of employment security or the duly authorized counsel for such department.