I know that in Europe you can let people go if the company is experiencing financial difficulties and all that, but there's no question that the commitment to any new European employee you hire is higher than in the case of their US counterpart. And it would be foolish to assume that by increasing the decisioning barrier there wouldn't be some kind of an action-reaction happening in the market. As an employer, you never have 100% certainty that a new initiative will pay off - there's always this doubt in the back of your mind. Well, if the cost of failure is higher in one case than another, you are simply going to initiate fewer bets and will also give fewer people an opportunity to benefit from them (and those bets that you do initiate, you will approach more carefully and with fewer people).
Does this explain the entire gap in unemployment? Of course not. But I really do think it is a factor. So what's better - a bulletproof job that fewer people have, or a more risky proposition that more people can get access to? I don't think I have an answer to this, but I certainly don't think that the answer is always in increasing the decisioning barriers.