Ohio Rev. Code § 705.25
The salary of an elective officer shall not be changed during the term for which such officer was elected.
All fees and perquisites appertaining to any municipal office or officer shall be paid into the treasury of the municipal corporation, and shall be credited to the general fund. No officer or employee of the municipal corporation shall receive otherwise than as the representative of the municipal corporation and for the purpose of paying it into such treasury any fee, present, gift, or emolument, or share therein, for official services, other than his regular salary or compensation. Any officer violating this section shall thereby forfeit his office. No member of the legislative authority or other officer or employee thereof shall receive compensation for services rendered in any other department of the municipal corporation, nor shall they or any other officer, clerk, or employee of the municipal corporation act as agent or attorney for any person, company, or corporation, in relation to any matter to be affected by action of the legislative or any other department, or by the action of any officer of the municipal corporation. The violation of this section is cause for removal.
R.C. §705.25