As with other employee welfare benefits, short and long-term disability plans may be subject to a federal law known as ERISA. Your administrative responsibilities should be fairly limited, since the company providing the insurance will probably act as the plan administrator, but you may be required to distribute information about the plan to your employees as part of a disclosure requirement. You may also be required to provide claim forms to employees and to provide the insurance company with information regarding an employee's eligibility status and compensation amount. Your insurer should provide claim forms and other necessary materials for your employees.
Make sure that you know up front which administrative responsibilities the insurer will be taking care of and what your responsibilities will be.