RCW 42.23.070 provides, in relevant part:

No municipal officer may use his or her position to secure special privileges or exemptions for himself, herself, or others. No municipal officer may, directly or indirectly, give or receive, or agree to receive, any compensation, gift, reward, or gratuity from a source, except the employing municipality, for a matter connected with or related to the officer's services as such an officer, unless provided for by law. ...


The penalties for accepting gifts can include civil fines, forfeiture of office, and, under certain circumstances, criminal prosecution. RCW 42.23.050.


RCW 9A.68.030 provides:

(1) A person is guilty of receiving or granting unlawful compensation if:
(a)Being a public servant, he or she requests, accepts, or agrees to accept compensation for advice or other assistence in preparing a bill, contract, claim, or transaction regarding which he or she knows he or she is likely to have an official discretion to exercise; or
(b) He or she knowingly offers, pays, or agrees to pay compensation to a public servant for advice or other assistence in preparing or promoting a bill, contract, claim, or other transaction regarding which the public servant is likely to have an official discretion to exercise.
(2) receiving or granting unlawful compensation is a class C felony.


The Public Disclosure Commission annual reporting forms only require the listing of certain de minimus permissible 'gifts', such as seminars and lunches.