It's not the lawsuit, it's about the time wasted as a manager and salary to the person as you work out if it's actually time to fire. Performance Improvement Plans, a bunch of back-and-forths. I'm not going to be the kind of person that fires quickly, so there's a bunch of sunk cost we have to take. Plus, fast firing creates a cooling effect among everyone there.
And for what? To save money on hiring? Not worth it.
Okay, so the original argument is about whether or not it's worth it to fly people out for an on-site. Hotel and airfare: $2000 absolute max. Salary at $100/hr for one month for me to figure out it's not going to work out, then pull the trigger to fire: $24,000.
I mean, being a manager is hard, but putting in the time and money to hire and then putting in the time to make sure your team doesn't have a morale drag, it's worth it.
The catch is that even in-person interviews are no panacea. I agree that it's worth the time to filter -- I wasn't really responding to that bit -- but from what I've seen, you have to be a very good interviewer not to get a bad hire every so often.
I often wonder how many hiring managers are actually good interviewers, in-person or not, but I digress...
Seeing the truly bad hires dragged along to the detriment of the rest of the team is a sore spot for me, though. It happens way too often in my experience.
And for what? To save money on hiring? Not worth it.