Madison Teachers, Inc. via a kind Jeannie Kamholtz email (PDF):

Among the many excellent benefits available to MTI members, guaranteed by MTI’s various Collective Bargaining Agreements, is the additional worker’s compensation benefit, i.e., benefits greater than those provided by Wisconsin Statutes.

Wisconsin Statutes provide a worker’s compensation benefit for absence caused by a work-related injury or illness, but the benefit does not begin until the 4th day of absence, and has a maximum weekly financial benefit.
MTI’s Collective Bargaining Agreements provide that one absent from work because of a work- related injury or illness will receive his/her full wage, and that it begins on day one of the absence. Further, MTI’s negotiated benefits for worker’s compensation are not limited by Wisconsin Statutes, i.e., there is no maximum. MTI’s Contracts also provide that one’s earned sick leave is not consumed by absence caused by a work-related illness or injury.

Although MTI is working to preserve this benefit, it is at risk due to Governor Walker’s Act 10.