N.H. Rev. Stat. Ann. § 281-A:3-a
Notwithstanding any provision of law to the contrary, an employee who has become incarcerated pursuant to a conviction shall forfeit any right to workers' compensation indemnity benefits 30 days after incarceration for the remaining period of incarceration.
Source. 1997, 225:1, eff. Jan. 1, 1998.