The bosses themselves were convincingly awful,

Rating: Null/10 (12 July 2011)

Horrible Bosses is about three average joes (Jason Bateman, Charlie Day, Jason Sudeikis) that are stuck on their job with awful bosses (Kevin Spacey, Jennifer Aniston, Colin Ferrell) all for different reasons. After all three reach their breaking point, they decide that their lives would be better if their bosses ceased to exist. What follows is their hilarious efforts in finding a way to get it done without getting caught. The premise was promising and thanks to a fresh script by Michael Markovitz, John Daly, and Jonathan Goldstein, the potential was indeed delivered—although not in the ways you'd expect.
The cast is hands-down the standout reason why this movie works. As a matter of fact its also its one minor flaw because we have tons of talent that were not utilized enough because some of the performances were so hilarious in the minimal material given. The bosses themselves were convincingly awful, especially the always-reliable Kevin Spacey as this sadistic, manipulative, and extremely cruel president of a company. Colin Ferrell and Jennifer Aniston step out of their usual roles and surprisingly deliver plenty of laughs with their own cruelly aggressive mannerisms. The main three also provided plenty of laughs and played off each other perfectly well, with Charlie Day being the best of the three. Day's experience with the mildly-dark "It's Always Sunny in Philadelphia" definitely shows off here, as his whiny and high-pitched voice perfectly matches his character persona and offers the most laughs and one-liners.