Okla. Admin. Code § 460:20-5-11
(a) Except as provided in Subsection (b) of this Section, employees shall not solicit or accept, directly or indirectly, any gift, gratuity, favor, entertainment, loan, or any other thing of monetary value from a coal company which:
(b) The prohibitions in Subsection (a) of this Section do not apply in the context of obvious family or personal relationships, such as those between the parents, children, or spouse of the employee and the employee, when the circumstances make it clear that it is those relationships rather than the business of the persons concerned which are the motivating factors. An employee may accept: