The UK Statistics Authority has written to Labour MPs pointing out that they haven't been presenting statistics on zero hour contracts entirely clearly.
Contrary to Labour's suggestions, 1.8 million people are not 'on zero hour contracts' but rather around 1.8 million zero hour contracts were in use in August 2014.
The number of people with a zero hours contract in their main job was estimated to be 697,000 in October-December 2014. The discrepancy is explained by the facts that people can have more than one zero hours contract or have a zero hours contract as well as a different main job.
The ONS have pointed out that although the number of zero hour contracts estimated to exist rose from 1.4 million in January 2014 to 1.8 million in August, this may be due to seasonal variations. It certainly doesn't imply that the number of people on zero hours contracts increased by 400,000.
For a fuller explanation of the facts about zero hour contracts, see our spotlight on the topic (here).
Politicians shouldn’t get away with misleading us—can you help?
As the UK’s independent factchecking charity, Full Fact relies on our supporters’ generosity to hold public figures to account and push for higher standards of debate.
But with a new prime minister on the way, and the possibility of a general election, we need your help more than ever to ensure that everyone can get the facts they need, on the issues that matter most.