Lewington said it was the first time Mercer had moved into the direct insurance sales market in New Zealand.
"This is very new territory for Mercer."
Lewington said the call was made to launch the new product after research showed people expected their KiwiSaver provider to also offer insurance.
The research also found 30 per cent did not have any insurance and 60 per cent of those it surveyed were under-insured.
"Our most valuable asset is the ability to earn income yet so many people haven't bothered to protect that."
Mercer would target selling the product to its KiwiSaver members first but would also sell directly to the public, Lewington said.
The KiwiSaver protection aspect is only available to its members and those who leave the scheme also lose that function although the insurance continues.
It's thought to be the first time KiwiSaver payments have been linked in with an insurance product.
More than 2.5 million people are now in KiwiSaver and pressure is on providers to try to attract members from other schemes.
Lewington said he expected other providers would also be looking for innovative new ways to gain members.
"If we are thinking about it I'm sure our competitors will be."