UK immigration minister James Brokenshire said that from next month students from outside the European Union who come to study at publicly-funded further education (FE) colleges in Britain will lose the right to work for up to 10 hours a week.
"Immigration offenders want to sell illegal access to the UK jobs market, and there are plenty of people willing to buy," Brokenshire said.
"Our reforms - which include introducing English language testing, removing sponsorship rights from hundreds of bogus colleges, and restricting students' access to the jobs market - are all of our plan to control immigration for the benefit of Britain," he said, as the latest rules were launched in the UK Parliament.
In justifying the decision, the UK Home Office highlighted official figures which show 121,000 non-EU students entering the UK last year but only 51,000 leaving.
As a further crackdown, the term of the student visas issued for FE colleges has also been cut from three to a maximum of two years after which they will have to leave the country.
FE colleges are educational institutions operating outside the realms of a full-blown university and include a range of vocational colleges in the UK.