A large insurance broker has agreed to offer a Web-based benefits administration service to its midsize employer clients.

Aon Corp., Chicago, will offer the Benergy system from A.D.A.M. Inc., Atlanta, to the midsize employers under the MyAonAssist name, according to A.D.A.M.

Aon also offer the midsize employers access to the Benergy Ready…Enroll insurance plan enrollment system, A.D.A.M. says.