William J. Brennan, Jr., Sinkler v. Missouri Pacific Railroad Company…
“ Hence a railroad worker may recover from his employer for an injury caused in whole or in part by a fellow worker, not because the employer is himself to blame, but because justice demands that one who gives his labor to the furtherance of the enterprise should be assured that all combining their exertions with him in the common pursuit will conduct themselves in all respects with sufficient care that his safety while doing his part will not be endangered. ”
