; (B) any backpay, with interest, to be paid by the labor organization in lieu of the employer; and (C) compensatory damages, including compensation for any special damages sustained as a result of the discrimination, including litigation costs, expert witness fees, and reasonable attorney's fees. (3) Possible relief Relief in any action under subsection (b) may include punitive damages in an amount not to exceed $250,000. (d) Election of remedies An employee may not seek protection under both this section and another provision of law for the same allegedly unlawful act of the authority. (e) No preemption Nothing in this section preempts or diminishes any other safeguards against discrimination, demotion, discharge, suspension, threats, harassment, reprimand, retaliation, or any other manner of discrimination provided by Federal or State law or provision adopted by an authority created by an interstate Compact. (f) Rights retained by employee Nothing in this section shall be construed to diminish the rights, privileges, or remedies of any employee under any Federal or State law, provision adopted by an authority created by an interstate Compact, or under any collective bargaining agreement. The rights and remedies in this section may not be waived by any agreement, policy, form, or condition of employment. IV Other Provisions 401. Standardization of Federal transit benefits (a) In general Not later than 15 days after the date of enactment of this Act, the General Services Administration (in this section referred to as GSA ) shall initiate a review of the various transit benefit programs administered by each Federal department and agency with facilities located in the Washington Metropolitan Area Transit Zone for the purposes of standardizing the rate of benefit for all Federal employees enrolled in such a program. (b) Purpose The standardized rate of benefit shall constitute— (1) an operating subsidy afforded to the Authority from the Government in lieu of direct appropriations for the Authority’s operating costs