Ohio Rev. Code Ann. § 731.05

The powers of the legislative authority of a city shall be legislative only, it shall perform no administrative duties, and it shall neither appoint nor confirm any officer or employee in the city government except those of its own body, unless otherwise provided in Title VII of the Revised Code. All contracts requiring the authority of the legislative authority for their execution shall be entered into and conducted to performance by the board or officers having charge of the matters to which they relate. After the authority to make such contracts has been given and the necessary appropriation made, the legislative authority shall take no further action thereon.