UK firms are being urged to prepare for the new rules on immigration, which come into force later this year.
The Home Office's Border Agency (UKBA) is launching a television campaign to alert employers to the forthcoming changes, which will be rolled out from November.
Under the new system, businesses that employ skilled workers from countries outside the EU will need to purchase a licence and sponsor the individual concerned.
Licences will cost between £300 and £1000, while each sponsorship application will cost a further £170.
Migrants will then be vetted to determine whether they possess skills that will benefit the UK economy, also known as ‘Tier Two’ of the points-based immigration system.
Lin Homer, chief executive of the UK Border Agency, said: ‘Our message to businesses is loud and clear - if you want to employ foreign workers from outside the EEA, you need to apply now for a sponsor licence.
‘Business benefits from migrant labour but must join us in helping crack down on illegal working and ensure a system which is both firm and fair.’
The reforms are part of a major shake-up of the UK's economic migration system. Earlier this year the Home Office introduced fines of up to £10,000 for businesses caught employing illegal workers.
For more information on the new regime visit: www.ukba.homeoffice.gov.uk/employers/.