The first film is a faithful and great adaptation of a comedy book. It has great characters and acting, somewhat unearthly settings, and a thin and understandable plot. Unfortunately, this sequel only manage to keep the characters funny, without any effort to tell a story. They have many conflicts that can be used as a premise to keep the linearity of the movie plot, such as how Kerani's husband keep favoring Bossman's wish, rather that his wife's, or how the Bossman manage to avoid the debt collectors. But, this movie clearly avoid those difficult themes and rather play it safe and solely dependent on Bossman's odd behaviors and slapstick nature throughout the film.
I have no problem with such narratives, but the movie also love to prolong some scenes (like the debt collectors' dance battle) just to make sure that the audience will have a laugh moment in every scene. This attempt somewhat similar to many Indonesian horror movies that love to scare the audience in every possible scene. The prolonged scenes (with repeated formula) can only manage to cover for a while, and after that, it leaves me bored to death.
For me, My Stupid Boss is a good formula as a sitcom (like The Office, OB: Office Boy), but I think the story is somewhat too thin and petite for a big screen. They actually have what it takes to make a great sitcom: Odd and distinct characters, lots of conflicts, and many cool and wicked ideas. It's a pity that such potential only kept in a movie format, which obviously, needs stronger plot that this movie is lack of.
But ... considering how this movie is well received by the audience, they (obviously) going to try make the same attempt later. It's TMI, but I think the makers can't keep this style for so long, because unlike Warkop DKI movie series, My Stupid Boss lacks of interesting side characters that can be used as a subplot. Until that happens, I doubt the film will continue to be as interesting as the first one.