Little contained in this misfire of a film works and the few successful things are dragged out to the point where they die a lingering death". Joe Neumaier of the New York "Daily News" wrote: ""Unfinished Business" squanders almost every opportunity provided by its potentially funny premise. Instead, it becomes yet another blotch on star Vince Vaughn's résumé." Robbie Collin of "The Daily Telegraph" gave the film 1 star out of 5, and said "Mawkishness, gay panic, and lazy jokes make Vince Vaughn's workplace comedy considerably less fun than work itself." Brad Wheeler of the Toronto "Globe and Mail" wrote: "Not without charm, Unfinished Business mixes the cute with the raunchy." Michael O'Sullivan of "The Washington Post" wrote: "While by no means a masterpiece, the comedy, by Canadian director Ken Scott, is a careful calibration of crass gags and genuine sentiment that succeeds more often than it fails."