I'm not trying to nitpick or anything, but to my ears calling a clearance a "perk" speaks to misconceptions about the reality of working in that ecosystem. But

I'm not trying to nitpick or anything, but to my ears calling a clearance a "perk" speaks to misconceptions about the reality of working in that ecosystem. But job mobility is a real thing, so yeah that's a good point to talk about. I can only speak from the contractor side of things, and it is true that many job openings list "must have active [clearance X]" as a requirement, which certainly keeps the candidate pool to within people already in that community. It takes 12-24 months to get some clearances, with no guarantee that after that time invested, you will actually be approved. So it is a massive gate. But the flip side, as others pointed out, is you have large chunks of time where you cannot talk about what you did in anything approaching the detail someone who worked on a non-cleared job can. Even if you worked on some stealth mode startup's top-secret project, with NDAs and whatnot, there's nothing like the very real threat of decades in federal prison. The best way to avoid falling afoul of an unauthorized disclosure is strongly compartmentalizing your work life - this is strongly encouraged within the industry. You talk about work at work, in a vault where the only other people there are cleared. You STFU everywhere else. Easy and simple to remember. The only time this is _ever_ a problem is when you're trying to get out of the industry, where you must talk about your work experience to potential employers. That's how your perk becomes a trap.