Upon receipt of a complaint pursuant to Section 1580.9, the state department shall make a preliminary review. Unless the state department determines that the complaint is willfully intended to harass a licensee or is without any reasonable basis, it shall make an onsite inspection within 10 days after receiving the complaint. In either event, the complainant shall be promptly informed of the state department’s proposed course of action.

No licensee shall discriminate or retaliate in any manner against any person receiving the services of such licensee’s adult day health center, or against any employee of such licensee’s facility, on the basis or for the reason that such person or employee or any other person has initiated or participated in an inspection pursuant to Section 1580.9 or 1581.