N.H. Rev. Stat. Ann. § 275-A:5

Any person, partnership, agency, firm, or corporation violating any provision of RSA 275-A shall be subject to a civil penalty of up to $2,500 for each day of noncompliance, to be imposed by the labor commissioner in accordance with the procedures established in RSA 273:11-a. Any person aggrieved by the commissioner's assessment of such penalty may appeal in accordance with RSA 273:11-b.