Just Follow Law (Chinese: 我在政府部门的日子) is a 2007 Singaporean comedy film directed by Jack Neo. The film also features a sing-along session near to the end of the film and everyone was singing the theme song called A Worthy and Useful Person (有用的人) from Neo's earlier popular and successful movie known as I Not Stupid. It also features cast members from popular local English and Chinese sitcoms Under One Roof, Phua Chu Kang Pte Ltd, Police & Thief, Living with Lydia, Happy Belly, My Grandson, the Doctor, Can I Help You? and Family Combo (Chinese Sitcom), and also from the Singaporean local drama With You. It also marks the on-screen reunion of Gurmit Singh, Neo Swee Lin and Lim Kay Siu after their previous collaboration in Phua Chu Kang Pte Ltd. Suhaimi Yusof and Silvarajoo Prakasam would later collaborate again in Neo's movie again in the future known as Long Long Time Ago, Long Long Time Ago 2, The Diam Diam Era and The Diam Diam Era Two.

In the film, an events and promotion department director and a blue-collar worker technician swap souls after a freak accident at a fictional government agency Work Allocation Singapore (WAS).

It was first released in Singapore on 15 February 2007.