I. No person in charge shall retaliate in any manner against, or otherwise discriminate against, a person, employee, or subordinate who exercises any rights under this subdivision or rules adopted pursuant to this subdivision, or by any policy or procedure promulgated under this subdivision for enclosed places.
II. Nothing in this subdivision shall be construed to authorize an employee to refuse to discharge his ordinary and customary duties in the workplace, including, but not limited to, entering a smoking-permitted area in the discharge of such duties.