Jeremy Corbyn is to speak to the organisers of the Glastonbury festival about their use of zero-hours contracts, his spokesman has said.
A large crowd chanted the Labour leader’s name when he appeared on stage at last month’s event to speak about employment rights among other issues.
But the organisers have faced criticism of the treatment of workers hired from across Europe to clean up after festivalgoers had gone home.
Most were reportedly laid off early.
According to the Independent, about 700 workers had travelled to Somerset from the Czech Republic, Spain, Poland and Latvia to help with the post-festival clean-up operation, on zero-hours contracts.
They were reportedly promised two weeks’ paid work but were laid-off after two days because there was less litter than expected, leaving them stranded and out of pocket.
In a video filmed by the Independent, a supervisor is heard telling sacked workers obstructing vehicles in protest that they should be grateful for two days’ work.
Mr Corbyn used his appearance on the Pyramid stage to say young people should not have to “accept low wages and insecurity as just part of life”.
Asked whether he would boycott the festival in future, Mr Corbyn’s spokesman said: “Jeremy and the Labour Party have taken a very strong stand against the use of zero-hours contracts and the exploitation of migrant and other workers, and we would take that view wherever it happened.
“How Glastonbury runs its event and runs its finances is entirely a matter for them.
“But these contracts should not be in place and shouldn’t be used.
“We oppose them, and next time we are in government we will ban them.”
Asked whether Mr Corbyn would raise the issue with organisers next time he visits the festival, the spokesman said: “He is happy to raise it right now.
“This kind of contract and these kinds of employment conditions are unacceptable.”