An insurance case manager’s duties are to ensure the delivery of health care benefits or other forms of insurance and related services to their clients and to oversee their clients’ cases. As an insurance case manager, you can work in a variety of settings but usually for insurance carriers and HMOs. Your responsibilities differ depending on who your employer is and the type of insurance you work with. For example, if you work for a life insurance company, your duties involve assessing risk, processing new application paperwork, and other tasks similar to that of an underwriter.