Here's a different take on this subject: As an old guy who had just retired at age 51 from the phone company, and realizing that my family couldn't live on half a paycheck every week, I thought about getting a job as a signal maintainer for the LIRR. What could be neater...combining my experience with electrical controls and my passion for trains? I had worked outdoors all my life and weather didn't scare me.
I happened to be in Lancaster, PA one day, and wandered out to take a look at the signal tower next to the Amtrak station. A gent in a suit saw that I was interested and asked me what my story was. I said that I might be interested in working as a signal guy for the LIRR and wondered if he knew how to go about it. As it turned out, he was the division manager of the signals group and he administered the entry test to me the next day, just for an unofficial evaluation. The test is roughly the same, he explained, for all the former PRR entities. I aced the test, and was pretty cocky about it.
When I got home to eastern Long Island, I called and set up an interview in Jamaica, to apply for a job. Before I made the two-hour trip for the interview, I had a nice chat with an HR person. I told him that I realized that the railroad had a signal depot in Riverhead and one in Southampton, and that either of those locations would be acceptable to me as a reporting point. He very politely apologized and asked me my age. I told him that I was 51. He said "Well, you would have to start off working out of the Jamaica office, and get a transfer as your seniority would allow. Positions 'Out East' are very desirable and lots of guys are on the waiting list. You'll probably be able to get a position out there by the time you're 107 years old."