A housing company may assign apartments for resident employees and their families if such assignments will provide for more efficient operation of the project. The apartments to be assigned and the rents, if any, to be charged shall be established by the company, subject to the prior written approval of the division. Resident employees shall not be subject to rental surcharges or annual income reviews. A resident employee's apartment lease or agreement which provides for immediate vacating of the apartment upon termination of employment for any reason whatsoever, shall be executed by all resident employees.