Every common carrier by railroad while engaging in commerce between any of the several States or Territories, or between any of the States and Territories, or between the District of Columbia and any of the States or Territories, or between the District of Columbia or any of the States or Territories and any foreign nation or nations, shall be liable in damages to any person suffering injury while he is employed by such carrier in such commerce, or, in case of the death of such employee, to his or her personal representative, for the benefit of the surviving widow or husband and children of such employee; and, if none, then of such employee’s parents; and, if none, then of the next of kin dependent upon such employee, for such injury or death resulting in whole or in part from the negligence of any of the officers, agents, or employees of such carrier, or by reason of any defect or insufficiency, due to its negligence, in its cars, engines, appliances, machinery, track, roadbed, works, boats, wharves, or other equipment.

Any employee of a carrier, any part of whose duties as such employee shall be the furtherance of interstate or foreign commerce; or shall, in any way directly or closely and substantially, affect such commerce as above set forth shall, for the purposes of this chapter, be considered as being employed by such carrier in such commerce and shall be considered as entitled to the benefits of this chapter.

Every common carrier by railroad in the Territories, the District of Columbia, the Panama Canal Zone, or other possessions of the United States shall be liable in damages to any person suffering injury while he is employed by such carrier in any of said jurisdictions, or, in case of the death of such employee, to his or her personal representative, for the benefit of the surviving widow or husband and children of such employee; and, if none, then of such employee’s parents; and, if none, then of the next of kin dependent upon such employee, for such injury or death resulting in whole or in part from the negligence of any of the officers, agents, or employees of such carrier, or by reason of any defect or insufficiency, due to its negligence, in its cars, engines, appliances, machinery, track, roadbed, works, boats, wharves, or other equipment.

In all actions on and after April 22, 1908 brought against any such common carrier by railroad under or by virtue of any of the provisions of this chapter to recover damages for personal injuries to an employee, or where such injuries have resulted in his death, the fact that the employee may have been guilty of contributory negligence shall not bar a recovery, but the damages shall be diminished by the jury in proportion to the amount of negligence attributable to such employee: Provided, That no such employee who may be injured or killed shall be held to have been guilty of contributory negligence in any case where the violation by such common carrier of any statute enacted for the safety of employees contributed to the injury or death of such employee.

In any action brought against any common carrier under or by virtue of any of the provisions of this chapter to recover damages for injuries to, or the death of, any of its employees, such employee shall not be held to have assumed the risks of his employment in any case where such injury or death resulted in whole or in part from the negligence of any of the officers, agents, or employees of such carrier; and no employee shall be held to have assumed the risks of his employment in any case where the violation by such common carrier of any statute enacted for the safety of employees contributed to the injury or death of such employee.

A regulation, standard, or requirement in force, or prescribed by the Secretary of Transportation under chapter 201 of title 49 or by a State agency that is participating in investigative and surveillance activities under section 20105 of title 49, is deemed to be a statute under sections 53 and 54 of this title.

No action shall be maintained under this chapter unless commenced within three years from the day the cause of action accrued.

Under this chapter an action may be brought in a district court of the United States, in the district of the residence of the defendant, or in which the cause of action arose, or in which the defendant shall be doing business at the time of commencing such action. The jurisdiction of the courts of the United States under this chapter shall be concurrent with that of the courts of the several States.

The term “common carrier” as used in this chapter shall include the receiver or receivers or other persons or corporations charged with the duty of the management and operation of the business of a common carrier.

Nothing in this chapter shall be held to limit the duty or liability of common carriers or to impair the rights of their employees under any other Act or Acts of Congress.

Any right of action given by this chapter to a person suffering injury shall survive to his or her personal representative, for the benefit of the surviving widow or husband and children of such employee, and, if none, then of such employee’s parents; and, if none, then of the next of kin dependent upon such employee, but in such cases there shall be only one recovery for the same injury.

Any contract, rule, regulation, or device whatsoever, the purpose, intent, or effect of which shall be to prevent employees of any common carrier from furnishing voluntarily information to a person in interest as to the facts incident to the injury or death of any employee, shall be void, and whoever, by threat, intimidation, order, rule, contract, regulation, or device whatsoever, shall attempt to prevent any person from furnishing voluntarily such information to a person in interest, or whoever discharges or otherwise disciplines or attempts to discipline any employee for furnishing voluntarily such information to a person in interest, shall, upon conviction thereof, be punished by a fine of not more than $1,000 or imprisoned for not more than one year, or by both such fine and imprisonment, for each offense: Provided, That nothing herein contained shall be construed to void any contract, rule, or regulation with respect to any information contained in the files of the carrier, or other privileged or confidential reports.

If any provision of this chapter is declared unconstitutional or the applicability thereof to any person or circumstances is held invalid, the validity of the remainder of the chapter and the applicability of such provision to other persons and circumstances shall not be affected thereby.