not that that doesn't happen, but in the context of the thread here, I imagine it wouldn't happen (or be more rare). You're needing to hire senior COBOL experts, and the 'senior' part is where the sort of behavior you're describing doesn't happen as much. Usually it's a mixture of confidence in your own ability, a dislike of politics, and an assurance that you can get work someplace else if/when you decide to leave.

The people that 'snitch' and feel 'under appreciated', and so on... my experience is they have trouble keeping work, are afraid of being found out, and do what they can to get rid of others who can recognize their lack of skills. I just don't think you'd find as many of those getting hired in the context of the needs of this thread.