It became a hit for Summer and is one of her signature songs , reaching number one for a three-week stay atop the '' Billboard '' R&B singles chart ( her first since 1979 ) , number three on the '' Billboard '' Hot 100 , and number three on the Dance Club Play chart . The single ended up as '' Billboard '' s fifteenth-best performing song of 1983 . Summer performed the song live as the opening of the 1984 Grammy Awards . Summer 's Grammy performance was released on the 1994 video cassette '' Grammy 's Greatest Moments Volume I ''
1984 Grammy Awards
26th Annual Grammy Awards
She Works Hard for the Money