§ 117. Rules. 1. The board may adopt reasonable rules consistent with and supplemental to the provisions of this chapter and the labor law. The chairman may make reasonable regulations consistent with the provisions of this chapter and the labor law.

2. Notwithstanding any other provision of this chapter, the board shall, at least forty-five days prior to the adoption, amendment, suspension or repeal of any rule or regulation of the board or of the chairman, give or cause to be given notice and offer any person or other agency an opportunity to present data, views or arguments, in accordance with the provisions of subdivision one of section two hundred two of the state administrative procedure act, providing, however, that the inadvertent failure to mail notice to any person or agency as provided therein shall not invalidate any rule or regulation adopted thereunder. A proceeding to contest any rule on the grounds of noncompliance with the procedural requirements of such subdivision must be commenced within four months from the effective date of the rule or regulation.