; (ii) the certification shall state the reason that the leave is required with the facts to be disclosed limited to the minimum necessary to establish a need for the rail carrier employee to be absent from work, and the rail carrier employee shall not be required to explain the details of the domestic violence, sexual assault, or stalking involved; and (iii) with respect to confidentiality under subparagraph (D) of such paragraph, any information provided to the rail carrier under this paragraph shall be confidential, except to the extent that any disclosure of such information is— (I) requested or consented to in writing by the rail carrier employee; or (II) otherwise required by applicable Federal or State law. (D) Specification of documentation A rail carrier may not specify which of the forms of documentation described in clause (i), (ii), or (iii) of subparagraph (B) is required to be provided in order to satisfy the requirement under subparagraph (A). (e) Prohibited acts (1) Interference with rights (A) Exercise of rights It shall be unlawful for any rail carrier to interfere with, restrain, or deny the exercise of, or the attempt to exercise, any right provided under this section, including— (i) discharging or discriminating against (including retaliating against) any individual, including a job applicant, for exercising, or attempting to exercise, any right provided under this section; (ii) using the taking of paid sick time under this section as a negative factor in an employment action, such as hiring, promotion, reducing hours or number of shifts, or a disciplinary action