Europe needs more migration to boost growth, says David Cameron and allies The European leaders, including the prime ministers of Italy, Ireland, the Czech Republic, Slovakia and Latvia, want migrants to settle where there are jobs amid high unemployment rates across the continent. In the letter to José Manuel Barroso, the president of the European Commission, the leaders suggest pensions law is currently a barrier to people who want to accept jobs in another EU country. At the moment, employees often lose their pension rights when they try to switch companies and move abroad. One of the major hurdles to moving pension pots is different taxation in each European country. The group of 12 leaders came together to submit proposals for increasing economic growth in Europe after a meeting between Mr Cameron and Mario Monti, the Prime Minister of Italy. Neither the French nor German leaders have signed the letter in a sign that a bloc of countries with right-leaning governments and less enthusiasm for European integration may be emerging. "We gave it to many governments, including the French and the Germans, but our cooperation continued with those who showed an interest to go ahead," said Enzo Moavero, Italy's European affairs minister. The new group is calling for an end to bank bail-outs, more trade with growing economies in Asia and Russia and less regulation. "Each of us recognises that the plan we propose requires leadership and tough political decisions," the letter says. The intervention comes ahead of a summit of European leaders in Brussels on March 1.