So true. This argument is simply bullshit in the US. It's just another justification for ridiculous hiring tests and other stupidity that weeds out a lot of good candidates. You can hire someone today and fire them next week. It happens all the time and there isn't a high cost other than the compensation for a week. You can, although a really shitty move, even delay someone's benefits for a few weeks or even months while they go through a trial period, often known as probation. It's shitty, but if costs are that important, it can be easily done. If you can't tell if a candidate is good after a few weeks or months of them working with you, that is a problem with your company not the candidate.