Engage Mutual has launched a voluntary option of its one fund health cash plan to broaden its corporate offering.
Helen Smith, head of engage mutual health, said: "Health cash plans are growing in popularity as they provide an increasingly affordable product for both employers and consumers alike.
"Employers continue to value the benefits that health cash plans provide, but some have a limited budget, so we have made our one fund more flexible to provide more choice."
One fund provides a single pot of money which can be used on a selection of benefits, or towards one single benefit. Engage Mutual acquired the one fund plan in 2011.
It provides cash back on: dental, optical, health screenings, consultations, counselling plus physiotherapy, osteopathy, chiropractic, acupuncture and homeopathy.