Mass migration from Europe is having a ‘disproportionate’ impact on the UK and damaging society, a government analysis says.

The leaked Whitehall document reveals that EU citizens are overwhelmingly the biggest winners in the British jobs market, responsible for 75 per cent of the growth in employment.

Graduates from Eastern Europe are taking low-skilled jobs, topped up by ‘generous in-work benefits, without having contributed, from Day One’.

This is damaging the ‘social policy objectives’ of getting lower-skilled British citizens into work, according to the Department for Work and Pensions analysis.

It says ‘unprecedented’ levels of migration from the EU are the main force behind the equivalent of a ‘new Coventry’ being added to Britain’s population every year.

Mass migration from Europe is having a ‘disproportionate’ impact on the UK and damaging society, a government analysis says

Separately, writing in today’s Mail, ex-work and pensions secretary Iain Duncan Smith warns of a fresh ‘stampede’ of EU workers if Britain does not vote to leave in the June 23 referendum.

The leaked paper, ‘EU & International Affairs in DWP’, is marked ‘sensitive’. It dates from March 24.

The report reads: ‘Net migration continues to rise at record levels and is now 336,000.

‘The biggest contributor is the increase in the long-term migration of EU citizens. This is equivalent to adding a new Coventry to the UK every year.

‘Newly arriving EEA [European Economic Area] nationals have a disproportionate impact on the UK. Numbers in employment in the UK grew by nearly 450,000 in the last year. EEA nationals secured about three quarters of that growth in employment, compared to 25 per cent for UK nationals.’

It adds that well-educated EU citizens from Eastern Europe ‘are over-represented in low-skilled sectors in the UK – in-work benefits can act as a subsidy for them to take and stay in these jobs, damaging UK social policy objectives’.

It says 60 per cent of Eastern European graduates in the country work in lower-skilled occupations, compared with 20 per cent of those from Britain.

It adds that more than £3.1billion of the annual £27.2billion in-work benefits bill goes to EEA nationals. They represent around 6 per cent of the working-age population, but receive more than 10 per cent of the in-work benefit spend.

The leaked Whitehall document reveals that EU citizens are overwhelmingly the biggest winners in the British jobs market, responsible for 75 per cent of the growth in employment

The leaked document says David Cameron’s ‘emergency brake’ on welfare is designed to ‘address’ the issues it outlines.

Last night a DWP source said: ‘These are all facts that are already in the public domain.

‘This is exactly why the PM has secured a deal to make sure EU migrants don’t get full access to benefits for four years.’

Senior sources close to the department have said the mechanism to limit EU claimants’ access to benefits is ‘unworkable’, but DWP insiders insist there is no question of it not being implemented.