I don't know about CSX, but I can tell you that the vast majority of railway operators' work rules for engineers are NOT better than regional airlines' pilots. I got to speak with quite a few engineers for BNSF at a BBQ, basically their lives are always on reserve. The system they described is once they return to their home base, their name goes to the bottom of a list. As another train needs to go out, the top name is taken off the list and out they go, until your number comes up again. Might be 2 days, but might also be 10 hours. Not uncommon I guess to get in around midnight, only to get a call at 9am for a noon departure again, for 4 days. Not to mention you usually have to start as a rail car worker (tough, tough physical labor), and engineers usually earn 50-70k/ year maximum. They said 8 days off in a month is about average, sometimes less, sometimes more. Apparently UPR and WPR are very similar.

Amtrak used to be considered a much better place to work as an engineer, kind of like moving from the "cargo" side to "passenger" side of an airline, but I guess Amtrak is doing very poorly financially, and as a previous poster said, are slashing their salaries and work rules. The similarities do sound very strikingly close to the situation at the airlines, don't they?