For my money, personally I don't really like Tats. Not my thing....I think they're often done with a flouncy statement of "I'M an individual!" - whilst totally failing to recognise every other tattooed "individual" out there. However, that aside, I think the issue as far as employment is murky. The aformentioned knuckledragger who has decided to ink every square mm of available skin and is busy trying to stick a water butt through their earlobe is going to struggle to obtain any kind of high level employment, because, let's face it - it doesn't really say "stable, professional" does it?
However, most people have one or two tats, easily covered up. If it's covered, I fail to understand why it's an issue for this, or any other, career....