http://artsbeat.blogs.nytimes.com/2013/10/02/carnegie-hall-opening-gala-canceled

"They are among the highest-paid performers at Carnegie Hall, even though they do not play a note: they are the stagehands of Local 1, whose average total compensation of more than $400,000 a year is more than some of the hall’s top executives earn. Little happens on Carnegie’s stages without them."