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1G 
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38 
or privileges of employment because the employee (or any 
person acting pursuant to a request, of tlm employee) has — 
“ID commenced, caused to be commenced, or is 
about to commence or cause to he commenced a pro- 
ceeding under this part, 
“(2) testified or is about to testify in any such 
proceeding, or 
“(3) assisted or participated or is about to assist 
or participate in any manner in such a proceeding or 
in any other action to enforce any requirement of this 
part. 
“(b) (1) Any employee -who believes that he has 
been discharged or otherwise discriminated against by any 
person in violation of subsection (a) of this section may, 
within thirty days after such alleged violation occurs, file 
(or have any person file on the employee’s behalf) a com- 
plaint with the Secretary of Labor (hereinafter in this sec- 
tion referred to as the ‘Secretary’) alleging such discharge 
or discrimination. Upon receipt of such a complaint, the Sec- 
retary shall notify the person named in the complaint of the 
filing of the complaint. 
“ (2) (A) Upon receipt of a complaint filed under para- 
graph (1), the Secretaiy shall conduct an investigation of 
the violation alleged in the complaint. Wiihin thirty days 
of the receipt of such complaint, the Secretary shall complete 
[ 656 ] 
