recommendations in writing and stating briefly the reasons therefore. (d) Massage Establishment – Operating Requirements. 1. Hours and Conditions of Operation. No Massage Establishment shall operate, nor shall any massage be administered in any Massage Establishment, between the hours of 10:00 p.m. and 7:00 a.m. The hours of operation must be displayed in a conspicuous place in the lobby within the Massage Establishment and in any front window clearly visible from outside of the Massage Establishment. (i) Each person employed or acting as Massage Practitioner or Massage Therapist shall have a valid certificate issued by the California Massage Therapy Council. It shall be unlawful for any owner, operator, responsible managing employee, manager or permittee in charge of, or in control of, a Massage Establishment to employ or permit a person to perform massage, as defined in this section, who is not in possession of a valid, unrevoked Massage Practitioner or Massage Therapist certificate issued by the California Massage Therapy Council. After December 31, 2015, all Massage Therapist permits previously issued by the Board shall be null and void, and in order to provide massage services in the City, a person must possess a valid, unrevoked California Massage Therapy Council Massage Practitioner or Massage Therapist certificate. (ii) The possession of a valid Massage Establishment permit does not authorize the possessor to perform work for which state certification as a Massage Practitioner or Massage Therapist is required. (iii) The Massage Establishment shall be supervised during all hours of operation by an operator specified in the permit application. 2. Posting Requirements. (i) A recognizable and legible sign complying with the requirements of this Code shall be posted at the main entrance identifying the business as a Massage Establishment. (ii) A list of services available and the cost of such services shall be posted in an open and conspicuous place on the premises. The services shall be described in readily understandable language. No services shall be performed and no sums shall be charged for such services other than those posted. Nothing herein prohibits a voluntary tip from being paid by the patron.