Around 660 employers have been named by the Government for failing to pay their staff the National Minimum Wage, including two businesses based in Oldham.

Housing Units Limited, in the OL9 area, failed to pay £7,724.83 to 2 workers. Medlock Day Nursery Ltd, in OL8, failed to pay £1,584.09 to 2 workers. Both appear on the list published as part of the latest naming round.

Across the list, around £4 million has been returned to over 27,000 workers who were denied pay they were legally owed. Penalties totalling £7 million were issued to the employers responsible.

The largest sum on the list belongs to B&Q LIMITED, in Eastleigh, which failed to pay £456,934.72 to 4,530 workers. Elysium Healthcare Holdings 3 Limited, in Borehamwood, failed to pay £330,048.81 to 1,095 workers, and St George's, Epsom and St Helier Hospital Group, in Epsom, failed to pay £123,331.97 to 75 workers. NHS trusts, care providers, nurseries, restaurants and retailers also feature.

This is the first naming round since the Fair Work Agency was set up in April. The enforcement body was created through the Employment Rights Act and brings workers' rights enforcement together in one organisation, offering employers a single place to get guidance on following the rules.

Business Secretary Jonathan Reynolds said: "The best businesses know that looking after your workers isn't just the right thing to do, it's the smart thing to do, building the stronger, more successful businesses that drive growth in every postcode." He added: "Short-changing your staff isn't a shortcut to success and we are determined to stamp it out."

Minister for the Future of Work Kate Dearden said: "Underpaying your staff is illegal, and we will not let workers foot the bill for their boss failing to follow the rules." She urged employers to check their payroll and contact Acas if they need support.

Matthew Taylor, chair of the Fair Work Agency Advisory Board, said: "Most employers want to do the right thing, and we will support them to comply, but those who fall short should expect robust enforcement to protect workers and maintain a fair playing field for responsible businesses."

Since the naming list began in 2011, more than £100 million in penalties have been issued to over 5,200 employers, with over £66 million repaid to 650,000 workers.

HM Revenue and Customs enforces the minimum wage on behalf of the Fair Work Agency. By law, most workers across the UK must be paid at least the minimum wage for their age, or apprentice status, for all the time they spend working.

Workers who think they are being underpaid can find out what to do at gov.uk/checkyourpay, or get free, impartial and confidential advice from Acas.