"Work It" is a hip hop song written by American rapper Missy Elliott and her producer Tim "Timbaland" Mosley for Elliott's fourth studio album Under Construction (2002). The song's musical style, and production by Timbaland, were heavily inspired by old school hip hop from the early 1980s. It samples Run-D.M.C.'s "Peter Piper" and Rock Master Scott & the Dynamic Three's "Request Line".