I found my first job like this: I was a teenager, and my dad thought I needed a summer job. He talked to his cousin, who was a golfer and spent a fair amount of money at the local course. This cousin talked to the golf course owner and secured jobs for myself and the cousin’s daughter, too. I stayed the summer and came back for two more. The other hire lasted less than a month, but a 50 percent retention is pretty good for a boss who just waits for help to walk through the...