No legislator, public officer or employee may request or receive an honorarium for a speech or service rendered that relates to the performance of public duties. For the purposes of this section, “honorarium” means payment of money, or any other thing of value in excess of one hundred dollars ($100), but does not include reasonable reimbursement for meals, lodging or actual travel expenses incurred in making the speech or rendering the service, or payment or compensation for services rendered in the normal course of a private business pursuit.