We had a real problem with this a few years back when we hired two people from the Netherlands (from a Ireland-based company) and they immediately offered them

We had a real problem with this a few years back when we hired two people from the Netherlands (from a Ireland-based company) and they immediately offered them a fixed position (instead of the more usual temporary contract), and they both turned out to be net-negative contributors: didn't actually get any work done, and created hassle/problems for others (one was referred by the other, and they were problematic in more or less the same ways, this was at an early stage before we realized the depth of the problems). But due to offering the "wrong" contract we also couldn't let them go, since that's very difficult (IMHO, too difficult) outside of gross misconduct, and is probably going to be expensive regardless. They also gave me such a contract by the way, as the first Dutch employee, but that wasn't an issue as no one wanted to get rid of me :-) I actually told them that was not a good idea, but after some turnover in the HR department it seems that got lost. Both left on their own account eventually, but taking in to account their wages, the increased workload for others, the fact that others literally quit the company because of these toxic assholes, by my estimation each individually cost the company well over a millions euro with nothing to show for it (I'm fairly certain zero code of one survived, and very little of the other).