The ’emergency brake’ is not the first time member states have tried to restrict freedom of movement within the EU. Indeed, after the enlargements in 2004 and 2007, most countries – though not Britain – did not give eastern European workers free access to their labour markets. But ultimately, write Eiko Thielemann (left) and Daniel Schade, the only reliable way to deter labour migrants is to ensure the economy is too weak to offer them worthwhile job opportunities
