Research by Tunbridge Wells Equitable has found two thirds of women aged 25 to 34 do not have income protection insurance, either personal or provided by their employer.
This is despite the fact that women under 40 are over twice as likely as male colleagues to be unable to work for six months or more.
And 17% believe they have cover when industry statistics suggest the real figure is more like 5%.
To encourage young women to tackle this issue, Tunbridge Wells Equitable has designed a replacement income policy, including a career break option and a cash pay-out at the end of the policy term irrespective of claims history.
Premiums for the scheme will be 10% to 55% higher than for men, with rates depending on age and occupation: this is thought fairer than simply adding 50% to allow for heavier claims experience.
Sales and marketing director David White said: “Young women are the breadwinners in more and more families.
“It is essential they protect their incomes against the effects of sickness or injury.”