RSA 281-A:42 Failure to Make Payment of Compensation.

I. The commissioner may assess a civil penalty of up to $2,500 on any insurance carrier or self-insurer who fails, without sufficient cause as determined by the commissioner, within 21 days after notice of a claim has been received by the insurance carrier or self-insurer or 21 days from the date that benefits are due:
(a) To make payment of compensation pursuant to RSA 281-A:28 and 281-A:31, and file a memorandum of such action with the commissioner; or
(b) To deny such compensation; to file a memorandum of such action with the commissioner; and to make a copy of the memorandum available to the claimant. The memorandum shall give a valid reason for the denial and shall advise the claimant of the right to petition the commissioner for a hearing.
(c) The memorandum