N.M. Admin. Code § 11.1.6.18
The employer shall respond in writing to the initial letter regarding the complaint within 10 business days of receipt. The employer shall also provide the division with true and accurate copies of the records that are required to be maintained by the Healthy Workplaces Act with respect to the complainant(s). The employer shall produce any other records related to the complaint requested by the division. The employer may provide other records of its choosing in responding to the complaint but this is not a requirement. In its discretion, the division may grant an employer a reasonable extension to respond to the initial letter if requested by the employer in writing specifically setting forth the good cause upon which the request for an extension is based.
N.M. Admin. Code § 11.1.6.18