"Work Song" is a work song and jazz standard by American trumpeter Nat Adderley and writer Oscar Brown Jr. It was first featured in Adderley's 1960 studio album of the same name, which was met with high praise and acclaim. "Work Song" is regarded as one of Adderley's best known compositions. The song was originally only an instrumental, but Oscar Brown Jr. included lyrics in a cover released the following year on his album, Sin & Soul.