49's the sticking point for French firms

Quantifying regulatory burden.

A group of LSE economists have published a paper which makes a strong effort to actually work out the damage regulations do to economic efficiency. Luis Garicano, Claire Lelarge, and John Van Reenen hit upon the method of looking to France, where there are sharp increases in the regulatory burden when firms employ 50 or more workers.

Seemingly as a result of those burdens, a noticeable number of firms appear to "stick" at 49 employees even when they may hire that extra marginal person. The piece's key chart is a killer:

Notice how the number of companies with 49 employees is actually higher than the number with 45 – and also that there's a precipitous drop between the number with 49 and the number with 50.

The paper tries to estimate, to a preliminary level, the regulatory cost of this burden. They estimate that 0.05 per cent of firms are distorted, and that the total output lost by those distorted firms is about 35 per cent – meaning that GDP is lowered by 0.5 per cent.

As the New York Times' Casey Mulligan writes, however, we shouldn't confuse the direct cost with the total cost of the regulations:

This is not to say that the regulations imposed on 50-employee companies are necessarily excessive, because they can create public benefits that more than justify their net costs for an employer and his employees, just as taxes and government spending can. For example, an air-pollution regulation might kick in at 50 employees that creates a significant cost for the employer and little aggregate benefit for his employees but creates a significant benefit for the people of France.

The employers also miss another transfer of wealth that might be just as important. Matt Yglesias covered it in another context last week:

One very plausible consequence of this would simply be to strongly discourage the owners of small firms from pursuing growth. And the big winners from that kind of disincentive to firm growth will be the owners of other small firms that simply aren't as lucky or well-managed as the growing ones.

In other words, it's a transfer of wealth from a company which may expand by a few employees to the companies which aren't going to have their lunch eating by a growing competitor. In the French context at least, that transfer will be relatively small. While companies are disinclined to grow from 49 to 50 employees, they may well be happy to leapfrog from 49 to 51 or higher; and the impact on creation of massive companies will be small indeed. But it will have an impact.

Fundamentally, it's an example of why it's best, where-ever possible, to target margins rather than absolutes. In taxation, for example, there's rarely this sort of adverse incentive, because there are few margins where earning more affects the taxes you pay on money already earned (where that does happen – between £100,000 and £150,000 of income, for instance – it is still carefully planned so that there is a positive value for every extra pound earned).

The problem is that that's harder to do for regulation. You can't really tell a company that they have to provide health insurance for the 50th employee but not the first 49, for instance. It would be unfair, not to mention probably even more impractical.

Better answers may be to more gradually phase in the burdens, so that at no point is there a leap in regulation big enough to dissuade too many companies from expanding; to stop fetishising small businesses, and make them subject to the same regulations as every other company (which would also force regulations to be easy to comply with, of course); or to make such regulations more explicitly support entrepreneurship rather than merely being small by imposing them a set period after a company has been founded, rather than basing them on growth.

More research, please!

An employer works on pullover sleeves for one of the luxury French brands who outsource work to these small specialist artisan factories on December 10, 2009 in Port-Brillet. Photograph: Getty Images

Alex Hern is a technology reporter for the Guardian. He was formerly staff writer at the New Statesman. You should follow Alex on Twitter.

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PMQs review: David Cameron's call for Jeremy Corbyn to resign will only help him

 "For heaven's sake man, go!" The PM's appeal was sincere but the Labour leader can turn it to his advantage. 

It is traditionally the leader of the opposition who calls for the prime minister to resign. At today's PMQs, in another extraordinary moment, we witnessed the reverse. "For heaven's sake man, go!" David Cameron cried at Jeremy Corbyn, echoing Oliver Cromwell's address to the rump parliament ("in the name of God, go!") and Leo Amery's appeal to Neville Chamberlain in the 1940 Norway debate.

While it was in his "party's interests" for Corbyn to "sit there", Cameron said, it wasn't "in the national interest". Some will regard this as a cunning ruse to strengthen the Labour leader's position. But to my ear, Cameron sounded entirely sincere as he spoke. With just two months left as prime minister, he has little interest in seeking political advantage. But as he continues to defy appeals from his own side to resign, the addition of a Tory PM to the cause will only aid Corbyn's standing among members. 

After rumours that Labour MPs would boycott the session, leaving a sea of empty benches behind Corbyn, they instead treated their leader with contemptuous silence. Corbyn was inevitably jeered by Tory MPs when he observed that Cameron only had "two months left" to leave a "a One Nation legacy" (demanding "the scrapping of the bedroom tax, the banning of zero-hours contracts, and the cancelling of cuts to Universal Credit"). Cameron conceded that "we need do more to tackle poverty" before deriding Corbyn's EU referendum campaigning. "I know the Hon. Gentleman says he put his back into it. All I can say is I'd hate to see it when he's not trying." 

The other notable moment came when Theresa May supporter Alan Duncan contrasted Angela Merkel with "Silvio Borisconi" (a Hansard first). Cameron replied: "Neither of the people he's talking about are candidates in this election, it's an election I will stay out of ... I was given lots of advice, one of them was not to go to a party with Silvio Berlusconi and I'm glad I took it." Given the recent fate of those who personally mocked Johnson during the referendum campaign, Duncan's jibe may not do May's cause much more help now. 

George Eaton is political editor of the New Statesman.