Martin Lewis is telling Brits that half a million of us on minimum wage might be underpaid - and how to get your more money if you are owed anything.
The MoneySavingExpert founder said workers could be underpaid if they are required to buy items to do their jobs, like safety clothing or tools.
Other people who could be eligible are underpaid because they have unpaid working time, such as having to get to work early to open the premises.