Madison Teachers, Inc. Solidarity Newsletter, via a kind Jeannie Bettner email (PDF):

Among the excellent benefits available to MTI members is the additional worker’s compensation benefit provided by MTI’s various Collective Bargaining Agreements.
Wisconsin Statutes provide a worker’s compensation benefit for absence caused by a work-related injury or illness, but such commences on the 4th day of absence and has a maximum weekly financial benefit.
MTI’s Contracts provide one’s full wage, beginning on day one of an absence caused by a work- related injury or illness, with no financial maximum. Also, MTI’s Contract provides 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.