(a) By December 1, 2003, each employer having an enclosed place of employment may adopt, implement, make known, and maintain a written smoking policy which shall contain at a minimum all of the following requirements:
(1) Any employee in a place of employment shall have the right to designate his or her work area as a nonsmoking area and to post the same with an appropriate sign or signs, to be provided by the employer.
(2) Smoking shall be prohibited in all common work areas in a place of employment, unless a majority of the workers who work in that area agree that a smoking area will be designated.
(b) The smoking policy shall be communicated to all employees within three weeks of its adoption. All employers shall supply a written copy of the smoking policy upon request to any existing or prospective employee.
(c) Notwithstanding any other provisions of this section, every employer shall have the right to designate any place of employment, or any portion thereof, as a nonsmoking area.