Ohio Revised Code Title XLIX. Public Utilities § 4901.10

The office of the public utilities commission shall be at the seat of government in Columbus, in suitable quarters provided by the state, and shall be open throughout the year, Saturdays, Sundays, and legal holidays excepted.  The commission shall hold its sessions at least once in each calendar month in Columbus, but also may meet at such other times and places as are necessary for the proper performance of its duties.  For the purpose of holding sessions in places other than the seat of government, the commission may rent quarters or offices, the expense of which, in connection therewith, shall be paid in the same manner as other authorized expenses.