"Extreme Job," from South Korea, and "Lobster Cop," from China, share similar stories and tones as they are based on a script written by the South Korean writer Choong-Il Moon. The script won a contest held in South Korea in 2014 by the Korea Creative Content Agency. As part of their global marketing strategy, the agency formed partnerships with other countries such as China, Philippines, Thailand, and Vietnam, which is why there's also Vietnamese version of Extreme Job, titled "Nghe Sieu De" or "Extremely Easy Job."
It broke the record for the most spectators of comedy genre movies in Korean history.
It became the No. 1 sales ranking in the history of Korean films.
A total of 463 chickens were mobilized for the movie.
At the end of the film, the main character defeats the villains and sits in a chair waiting for the arrival of the police, which is imitated from the end of John Woo's film "A Better Tomorrow II(1987)" (including the same background music). The 'A Better Tomorrow' film series has an unparalleled influence in South Korea and has always been a sought after tribute film in South Korean cinema.