Corporate is about as unsecure as you can get, outside the specialty flying and seasonal flying jobs. Some pay well, but talk to five corporate pilots, and you'll have probably ten stories about companies that folded in the night with no notice.
Personally, I showed up at the hangar one morning flying a corporate sabreliner, and was told to report to the CP. I was then told to sit down for a few minutes, and a member of the board of directors came into the room and sat down. Fifteen minutes later, I was out of work, and the department was selling the airplane, contracting out the flying. (Turned out they didn't. They crashed it about eight months later, instead). That on the heels of being ready to close on a house. I thought I'd be there for a long time. Just about any corporate pilot should be able to read that and say, "Uh-huh. Sounds about right."
Good flying, and corporations typically take care of you. You're also the first thing to get flushed when it's time to lose weight. A great percentage of a corporate pilot's time is spent attempting to justify the job to the company, in order to keep the job. Selling the job, in other words. It's hard for non-pilots in management to accept what a corporate airplane can do; it's most often a prestige issue. It's also a very disposable asset, as are the crews. As a result, hold on to your hat, and always have resumes out just in case. Gauranteed you'll need them, if not later, then sooner.
