N.M. Stat. § 59A-46-47
Coverage of part-time employees.
A health maintenance organization that provides coverage for health care services
pursuant to the Health Maintenance Organization Law 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.