4 Pa. Code § 7.157
No employe, appointee or official in the Executive Branch of the Commonwealth shall accept honoraria, speaking fees or any other valuable consideration. Nor shall any appointed official or State employe receive compensation for consultation which draws upon ideas or data derived from his official duties. However, Commonwealth officials or employes may designate nonprofit, charitable organizations to be recipients of honoraria or speaking fees offered to such Commonwealth employes or officials by groups which customarily offer such honoraria to guest speakers. This paragraph does not apply to individuals appointed to serve on Boards and Commissions who may not, however, accept such honoraria from groups that are regulated by the Board or Commission on which they serve, or which could otherwise raise a legitimate question about their ability to fairly and impartially perform their official duties.
4 Pa. Code § 7.157
This section cited in 4 Pa. Code § 7.159 (relating to enforcement).