More than three quarters of the average UK worker's pay is already earmarked to meet bills and living expenses each month, a survey suggests.
Britons only have savings sufficient to cover 18 days living costs
The average worker earns £1,389 a month of which £1,093 goes on bills and food, the Combined Insurance survey found.
A mortgage is the biggest average monthly expense at £347, followed by loan and credit card payments at £216.
High monthly outgoings mean that workers only have sufficient savings to cover 18 days' living costs.
"Millions of Britons are living on the edge by failing to protect the lifestyles they have become accustomed to," Nigel Brittle, Combined Insurance spokesman, said.
"Few people have enough savings to last them more than a few weeks."
Combined Insurance interviewed 2,000 UK workers.