Do you ever stop worrying about your kids even when they're grown?

My adult son has a dangerous job and I really wish he'd find something else. They aren't paying him enough for the amount of danger he's exposed to for his overall health. He's been talking about finding another job for months, but hasn't really looked. There's been two incidents now. I guess you never stop worrying and you just got to let them make their own choices. All I can do is guide him to put his well-being over a job.