Pros
The only pros are the work is not very physically demanding.
Cons
The working conditions and hours are horrible at best. The company leaves the toilets in the cab of the locomotives with heaping piles of poo in it for employees to breath all the time just for an example. The management are arrogant and totally out of touch with the employees and are constantly trying to find things to fire people for. Warren Buffet once said Union Pacific is the most mismanaged gold mine in America. No truer words have been spoken. The constant harassment from management alone is enough to make a person quit. The benefits keep going farther and farther down. They will give you a raise that equates to about $5 because they counter any negotiated raises by increasing your contributions to your health benefits so you really never get a raise. It's like pulling teeth to get paid any claims etc. Just all around a horrible place to work. I would definitely NOT suggest this career path for anyone, not even my worse enemy.