Hello minna-san!
Here i am with my review on Line offline: Salaryman.
It's a pity that nobody's written a review on it so far, so i'll do my best here.
I guess i should start with saying that the show is really specific. As you already know from the synopsis, it's about office workers and their routine life, and its targeted audience is the office workers as well. Basically, if you've ever experienced office life, you are likely to enjoy the show. Some of the episodes really resembled my office life and at some point i found myself laughing at the situations that were making me angry / nervious / uneasy in real life. So actually the show helps to deal with stress and to take things easier.
If you have no idea of office life at all, try this show - it'll give you an unforgettable experience.
As for the story, there's not much of a plot. It's a sitcom, so every episode deals with a specific situation, like staying up late to redo a failed task, lunch break, making a presentation for your boss, your office looks etc. Some of the episodes are connected, but mostly not.
The main weak point of the show is its art and character design. Though it is a comedy and parody, and such kind of shows tend to have poor art, i still don't like it. The art it very-very simple, and James' and boss' design makes my eyes bleed. So i wish they put more effort in art and made it more detailed and pretty.
The characters are not really deep nor well-developed, but each one of them has his/her specific features and their personality is shown pretty well.
It's a pity that the show got 6-something ranking on MAL. There are not much shows for a specified audience, and that one is really well-made. You should give it a try.