Jeremy Corbyn’s party was backed by a majority of working people, including those in full-time and part-time employment.
A majority of those identifying as unemployed or students also backed Labour, a YouGov poll taken in the five days after the election showed.
The survey will offer little comfort to Theresa May, who suffered a humiliating election night on Thursday when her majority was reduced in the Commons, leaving her dependant on support from the Northern Irish unionists to form a new government.
The latest YouGov findings suggest the Tories are struggling to win support even among those in employment, despite claims to be “the workers’ party”.
According to the survey, 63 per cent of retired voters backed the Tories, while just 24 per cent opted for Labour.
The remainder was split between the other parties, including 7 per cent for the Liberal Democrats.
However, those working part time (fewer than 30 hours a week) showed a slight preference for Mr Corbyn’s party, with 44 per cent expressing support for Labour to 40 per cent for the Tories.
The share among full-time workers (more than 30 hours a week) was even better for Labour, with 45 per cent backing the party versus 39 per cent who favoured Ms May.
Full time students backed Labour by 64 per cent to the Tories 19 per cent and the Lib Dems 10 per cent, while more than half (54 per cent) of unemployed voters in the 2017 election gave their backing to Mr Corbyn, compared to 28 per cent favouring the Tories.
Several Labour MP’s attributed their surprise success in the snap election to the youth vote.
Tim Bale, politics professor at Queen Mary University of London, said young people had borne the brunt of austerity measures embraced by the Conservative-led governments since 2010.
"They're worried about housing, tuition fees, the gig economy, stable jobs — it's no surprise they are fed up," he said.
Government figures showed more than two million people aged 34 or under signed up online to vote in the month before the 22 May registration deadline — compared to 1.46 million in the same period ahead of the 2015 election.
The YouGov survey, described by the pollster as “one of the biggest surveys ever undertaken into British voting behaviour”, was based on responses from 52,615 British adults taken between 9 and 13 June who voted in the 2017 general election.Reuse content