C.R.S. § 40-20-307
40-20-307. Reporting violation to union representative - request for investigation
40-20-307. Reporting violation to union representative - request for investigation. (1) A crew member of a train operated by a railroad in the state may report to the crew member's designated union representative:
(a) A violation of any of the safety requirements specified in this part 3;
(b) An injury the crew member or another crew member sustained while operating a train on any track in connection with railroad transportation in the state; or
(c) A death that occurred during the operation of a train.
(2) A designated union representative receiving a report may request an investigation from the office of rail safety.