THERESA May’s position as prime minister is on a zero-hours contract meaning she does not even know if she will be working next week.

May was employed full-time until recently, with paid holiday and pension rights, but has seen her role downgraded in light of an uncertain economic future.

She said: “There was a restructure at work – which I was all for – but it ended up with my job being readvertised and I had to apply for it again.

“I got it, but they’ve said they had to rethink the role so now I don’t know what my hours will be from day to day and I’ve ended up doing loads of stuff that I used to get paid for for free.

“They say everyone’s in the same boat, but I can’t plan for the future like this. I can’t even get a proper debit card. I’m on a Visa Electron.”

May added: “They should do something about it. Next election I’m going to vote for that Ed Miliband.”