subsection. (6) Employee shift trading Nothing in this subsection shall be construed to prevent an employer from allowing a retail, food service, cleaning, or Secretary's designated employee to work in place of another employee who has been scheduled to work a particular shift as long as the change in schedule is mutually agreed upon by the employees. An employer shall not be subject to the requirements of paragraph (2) or (3) for such voluntary shift trades. (d) Pay stub transparency Any pay provided to an employee pursuant to subsection (a), (b), or (c)(3) (referred to in this paragraph as additional pay ) shall be included in the employee's regular paycheck. The employer shall identify, in the corresponding written wage statement or pay stub, the total number of hours of additional pay provided for the pay period involved and whether the additional pay was due to the requirements of subsection (a)(1), the requirements of subsection (a)(2), the requirements of subsection (b), or the requirements of subsection (c)(3). (e) Exception The requirements in subsections (a) through (d) shall not apply during periods when regular operations of the employer are suspended due to events beyond the employer’s control. 5. Prohibited Acts (a) Interference with rights It shall be unlawful for any employer to interfere with, restrain, or deny the exercise or the attempt to exercise, any right of an employee as set forth in section 3 or of a retail, food service, cleaning, or Secretary's designated employee as set forth in section 4. (b) Retaliation prohibited It shall be unlawful for any employer to discharge, threaten to discharge, demote, suspend, reduce work hours of, or take any other adverse employment action against any employee in retaliation for exercising the rights of an employee under this Act or opposing any practice made unlawful by this Act. For purposes of section 3, such retaliation shall include taking an adverse employment action against any employee on the basis of that employee’s eligibility or perceived