Senior figures at Britain's largest unions have signed a statement saying that they stand behind Corbyn to fight off the "regrettable and unnecessary" crisis in the Labour party.
"Jeremy Corbyn is the democratically-elected Leader of our Party who secured such a resounding mandate," the statement reads.
It continues, saying his position "cannot and should not be challenged" other than through "the proper democratic procedures" set out in the party's constitution.
Huge union endorsement for @jeremycorbyn: His position cannot and should not be challenged except through the proper democratic procedures
The leader of the UK's biggest trade union has said the country is 'riven' as a result of the EU referendum.
Len McCluskey told ITV News that the trade unions can help broker a peace deal and reunite the party now the "coup has failed".
Labour leader Jeremy Corbyn said he would 'reach out' to MPs that oppose his leadership but said they should 'respect democracy'.