Under his leadership it grew from having 300 policyholders to become the largest company in the world that exclusively sold health and disability insurance.

[3] The Mutual Benefit Health and Accident Association was founded in 1909 with a charter to sell insurance in Nebraska.

The founders asked Clair Criss for advice, and he told them to make their policies simpler, with broader coverage.

Clair Criss completed his medical degree at Creighton University while the couple ran the insurance company.

The company sold health care policies that were not limited to fixed periods, and provided lifetime disability coverage for ordinary people.

[4] Clair joined community organizations such as Knights of Ak-Sar-Ben, the Benevolent and Protective Order of Elks and the Omaha Chamber of Commerce.

During his tenure Mutual Benefit became the largest company exclusively offering health and accident insurance.