Ed Miliband has admitted Labour "did get it wrong" on immigration when they were in Government and pledged new measures to prevent British people being "locked out" of jobs by foreign workers.
His said overseas-only employment agencies would be banned and an early-warning system set up to highlight areas where locals are "dominated" by an influx of overseas labour under the proposals.
Political Correspondent Romilly Weeks has the full report:
While there cannot be set quotas on home-grown workers, urgent action is required to identify where British jobseekers need better training to compete, the Labour leader said.
Demanding that job centres be told of all firms where more than one in four staff is from overseas would form part of the new system to provide Whitehall and town halls with vital information.
Mr Miliband hopes to shift the focus of the debate from border controls, and what he says are ineffective Government caps on arrivals, towards the impact on people's daily lives.
While restrictions on new arrivals, including caps on people from any new EU member state, are necessary, reforming the jobs market is just as important, he argued.
Stricter enforcement of minimum wage laws and doubling fines to £10,000 would also form part of an effort to stop firms using cheap foreign labour to undercut domestic jobseekers.
ITV News Political Correspondent Lucy Manning asked Mr Miliband, if there are too many immigrants coming into the country.
In response he said the numbers of low-skilled immigrants coming to the UK "are probably still too high and I would like to do something about it".
He said Labour had to change its approach to immigration and recognise "the costs as well as the benefits".
The last Labour government under Mr Brown became "too disconnected from the concerns of working people", he said.
People in Ed Miliband's Doncaster North constituency gave their views on immigration.