The use of zero hours contracts has rocketed over the past decade, with the biggest surge in the North East.
Analysis by Labour found the number of workers without guaranteed hours has risen by 70% in the region since 2012/13, followed by London (60%) and the North West (55%).
Overall, London has the largest number of people working on a zero hours contract, with 181,000 workers now employed on such contracts, followed by the South East with 160,000, and the North West with 136,000.
The Tories vowed to tackle precarious contracts five years ago but the Government has failed to deliver on its promise.
Labour wants to scrap zero hours contracts completely, which it argues go hand in hand with low pay and poor working practices.
Shadow Employment Rights Minister Justin Madders said: “A tidal wave of insecure work has seen an explosion in zero-hour contracts all across the UK, leaving working people with zero security.
"Working people have taken the biggest hit to living standards on record, and are being left to pay the price of the Tory mortgage penalty while energy bills and food prices spiral."
Matthew Taylor, who worked as head of the No10 policy unit under Tony Blair, criticised the practice as part of a review into modern employment in 2016.
He found zero hours contracts left workers reliant on bosses to give them work, which could lead to income insecurity and fears about speaking up over working conditions.
A Department for Business & Trade spokesperson said: “We are proud of our flexible and dynamic labour market, which allows businesses in every region of the UK to create jobs while also ensuring workers’ rights are robustly protected.
“Through the National Minimum Wage (NMW) and National Living Wage (NLW) the Government protects the lowest-paid within our society, and increases to both this month gave a pay rise to around 2.9 million workers, including young people and apprentices.
“The government is also backing new rules to give people on zero hours contracts the right to request a more predictable working pattern.”
