Section 11(c) provides in general that no person shall discharge or in any manner discriminate against any employee because the employee has: (a) Filed any complaint under or related to the Act; (b) Instituted or caused to be instituted any proceeding under or related to the Act; (c) Testified or is about to testify in any proceeding under the Act or related to the Act; or (d) Exercised on his own behalf or on behalf of others any right afforded by the Act. Any employee who believes that he has been discriminated against in violation of section 11(c) of the Act may, within 30 days after such violation occurs, lodge a complaint with the Secretary of Labor alleging such violation. The Secretary shall then cause appropriate investigation to be made. If, as a result of such investigation, the Secretary determines that the provisions of section 11(c) have been violated civil action may be instituted in any appropriate United States district court, to restrain violations of section 11(c)(1) and to obtain other appropriate relief, including rehiring or reinstatement of the employee to his former position with back pay. Section 11(c) further provides for notification of complainants by the Secretary of determinations made pursuant to their complaints.