(a) A facility may not accept a donation from a person who is a party to a contested case before the department or the Texas Health and Human Services Commission until the 30th day after the date the decision in the case becomes final. "Contested case" has the meaning assigned by Texas Government Code, §2001.003.(b) A private donor must not use an employee of the department or department property except under a contract with the department or with approval of the head of the facility.