N.M. Stat. § 59A-23-7.5
Coverage of part-time employees.
An insurer that provides group health insurance pursuant to Chapter 59A, Article 23
NMSA 1978 shall make available, upon an employer's request prior to issuance,
delivery or renewal, coverage for regular part-time employees who work or are expected
to work an average of at least twenty hours per week over a six-month period. Nothing
in this section shall be construed to require an employer to offer or provide coverage for
regular part-time employees.