A commissioner of an authority may be removed by the mayor, or in the case of an authority for a county, by the governing body of the county, for inefficiency, neglect of duty, or misconduct in office. A commissioner may be removed, however, only after having had an opportunity to be heard upon the charges in person or by counsel. A copy of the charges must be served upon the commissioner at least ten days before the date fixed for the hearing. In the event of the removal of any commissioner, a record of the proceedings, together with the charges and findings thereon, must be filed in the office of the auditor of the city or county, as the case may be.