Guardian Employee Benefits is rolling out cover for spouses and partners as part of its Corporate Protection Menu.
The policy provides financial protection to partners in the event of death.
It is available solely through IFAs to married couples, live-in couples and same-sex partners.
GEB commissioned res earch following employee and employer fears about maintaining a household in the event of a death.
Sixty per cent of the 350 people polled had made no financial provision for an unexpected death.
Three-quarters said they would opt for cover if offered by their employer as part of a benefits package.
The cost of the policy depends on age, sex and the sum assured. A male aged 40 would pay a monthly premium of £5.15 for £50,000 cover.
The cost for a woman on a similar policy is £4.42 a month.
Marketing manager Brian Rawle says: "This research shows us that housepartners' contributions are underval ued and the financial implications of a partner's death are enormous."