Co-worker of mine at a family run business took on the kind of responsibility you want an employee to take on. He was traveling to see customers, putting in good amounts of billable hours, and the business' biggest client considered him "part of the team."
While he was making a couple hundred thousand for the company, he was only making $40k.
Meanwhile, I'd be in meetings where they were saying the guy wasn't that great an employee. Basically, they were worried he'd ask for what he was worth in year 2. What they didn't know is that he had two other gigs going.
Becoming unhappy with the situation, he gave 2 months notice. They talked about just firing him, but decided they'd make him suffer by only having him work 24 hours a week, and pay him 40% less; that way he could go to the big clients, but get paid less. Well, it turned out the guy had never once called in sick, took a vacation day, or used credit hours (there was no OT, just credit), so when the timesheets came in, he was allocating those hours. They were totally pissed, and actually OWED HIM money when he left!
When he left, it was to go hiking for the month - mostly daily jaunts on different trails.
2 years later, the epic FU came. He sent us all invitations to his house warming.
"Hmmpph. Probably a gift grab," someone said.
Invitation specifically said, NO GIFTS.
Of the 12 invites, I was the only one who went. They couldn't stand the idea that he ended up doing just fine without them.