Zero-hours contracts

This tweet has been very popular recently. It seems to be implying that Britain's record level of employment is an illusion and that the figures are inflated by loads of chronically underemployed people on zero-hours contracts.

BBC Reality Check asked the Office for National Statistics (ONS) whether working just one hour a week was all that was needed to be officially classified as employed?

The ONS confirmed that was the case. https://t.co/fT3Mi5hSZx

— Ian Martin (@IanMartin) January 23, 2019

This is a fairly easy claim to check and so I did. Have a read at the IEA blog.