No person may discharge or otherwise retaliate against any employee with respect to the employee's compensation, terms, conditions, or privileges of employment because the employee engaged in any of the activities specified in paragraphs (b) or (c) of this section. In addition, no person may discharge or otherwise retaliate against any employee with respect to the employee's compensation, terms, conditions, or privileges of employment because a person acting pursuant to the employee's request engaged in any of the activities specified in paragraph (b).

It is a violation for any person to intimidate, threaten, restrain, coerce, blacklist, discharge, discipline, harass, suspend, demote, or in any other manner retaliate against any employee because the employee or a person acting pursuant to the employee's request has:

Filed orally or in writing a complaint with an employer, government agency, or others or begun a proceeding related to a violation of a commercial motor vehicle safety or security regulation, standard, or order; or

Testified or will testify at any proceeding related to a violation of a commercial motor vehicle safety or security regulation, standard, or order.

It is a violation for any person to intimidate, threaten, restrain, coerce, blacklist, discharge, discipline, harass, suspend, demote, or in any other manner retaliate against any employee because the employee:

Refuses to operate a vehicle because:

The operation violates a regulation, standard, or order of the United States related to commercial motor vehicle safety, health, or security; or

He or she has a reasonable apprehension of serious injury to himself or herself or the public because of the vehicle's hazardous safety or security condition;

Accurately reports hours on duty pursuant to Chapter 315 of Title 49 of the United States Code; or

Cooperates with a safety or security investigation by the Secretary of Transportation, the Secretary of Homeland Security, or the National Transportation Safety Board; or

Furnishes information to the Secretary of Transportation, the Secretary of Homeland Security, the National Transportation Safety Board, or any Federal, State, or local regulatory or law enforcement agency as to the facts relating to any accident or incident resulting in injury or death to an individual or damage to property occurring in connection with commercial motor vehicle transportation.

No person may discharge or otherwise retaliate against any employee with respect to the employee's compensation, terms, conditions, or privileges of employment because the person perceives that the employee has engaged in any of the activities specified in paragraph (e) of this section.

It is a violation for any person to intimidate, threaten, restrain, coerce, blacklist, discharge, discipline, harass, suspend, demote, or in any other manner retaliate against any employee because the employer perceives that:

The employee has filed orally or in writing or is about to file orally or in writing a complaint with an employer, government agency, or others or has begun or is about to begin a proceeding related to a violation of a commercial motor vehicle safety or security regulation, standard or order;

The employee is about to cooperate with a safety or security investigation by the Secretary of Transportation, the Secretary of Homeland Security, or the National Transportation Safety Board; or

The employee has furnished or is about to furnish information to the Secretary of Transportation, the Secretary of Homeland Security, the National Transportation Safety Board, or any Federal, State, or local regulatory or law enforcement agency as to the facts relating to any accident or incident resulting in injury or death to an individual or damage to property occurring in connection with commercial motor vehicle transportation.

For purposes of this section, an employee's apprehension of serious injury is reasonable only if a reasonable individual in the circumstances then confronting the employee would conclude that the hazardous safety or security condition establishes a real danger of accident, injury or serious impairment to health. To qualify for protection, the employee must have sought from the employer, and been unable to obtain, correction of the hazardous safety or security condition.