Thanks to those who have posted so far.
With me, I started working part-time in high school (as the US calls it) in a hospital as an EEG technician. My father was a doctor, and times were simpler then. Hospitals were not large corporations that most are today. Most were local community hospitals, just as most doctors had their own practices (a rarity these days). To make a long story short, my father got me the job. I worked doing EEGs, and repairing EEG "machines", at several hospitals for about 5 years after I got out of high school. That's when I went to college.
It was after I finally went to college and got out that I decided to find a different job. I didn't want to go to med school but I never really had a direction or particular desire to do anything specific. I liked electricity and all things electric, so I contacted some people I knew who were electricians. Problem was, the economy was "down" so there were no openings for apprentices. I had my pilot license but at the time all I could get were a few "odds and ends" jobs - Airlines, at the time, wanted ex-air force pilots.
I got into DoD work by seeing an advertisement in our local newspaper. The advertisement was for someone with experience with a specific DoD "mil spec". I had no idea what a "mil spec" was, but the job was at a nearby company, so I went to the Cincinnati library and looked it up. It was on microfilm, and it wasn't too long, so I copied each of the pages. I think it was something like 5¢ a page. I called the company and asked for the quality manager. They connected me and I told him - "I have no experience with the mil spec, but I got a copy at the library and it looks pretty simple to me". The company was a small company of (at the time) less than 50 people that was owned by some people in an investment group in California (HTCC, IIRC):
Sealtron Inc - 9705 Reading Rd, Cincinnati, OH Anyway, the fellow invited me to come and "talk" with him. I went, I brought my copy of the mil spec, and we discussed it. No resume or anything like that. I probably took a copy of my college transcript. I impressed him enough that I was pretty much hired on the spot. My title was "QC Laboratory Manager". Most of what I did was QPL (qualified product list) planning, required testing, and submissions, to get their products on what these days is called the Approved Products List (DODIN APL) -
Approved Products List (APL) Testing & Certification - It was a good entrance for me into the "business" world.
As an aside, it was in DoD work that I discovered what was the precursor to what is now the internet - It has come a long way since those days...