Representing more than 75,000 union tradesmen and 4,000 contractors, Top Notch is the one association reprsenting all sectors of Indiana's Union Construction Industry.Top Notch promotes and advocates the value and cost-effectiveness of its members, that make up Indiana’s highly trained and skilled construction industry.  Top Notch serves as the leadership forum and resource for positive industry change.  Formed more than four decades ago, Top Notch leads, coordinates, communicates, educates and unifies key associations and labor groups within the Indiana Union Construction Industry.