; (2) seek the previous wages or salary history, including benefits or other compensation, of any prospective employee from any current or former employer of such employee; or (3) discharge or in any other manner retaliate against any employee or prospective employee because the employee— (A) opposed any act or practice made unlawful by this section or made or is about to make a complaint relating to any act or practice made unlawful by this section; or (B) testified or is about to testify, assist, or participate in any manner in an investigation or proceeding relating to any act or practice made unlawful by this section. . (b) Penalties Section 16 of such Act ( 29 U.S.C. 216 ) is amended by adding at the end the following new subsection: (f) (1) Any person who violates the provisions of section 8 shall— (A) be subject to a civil penalty of $5,000 for a first offense, increased by an additional $1,000 for each subsequent offense, not to exceed $10,000