If you're looking for manga similar to Hataraki Man, you might like these titles.
In this part of the series, Kousaku has just started working at a branch office for the company doing an unexpected amount of menial labor when a chance meeting with the company president leads to his dearest wish being granted as he is transferred to the central office. Not all is well there, though, as he becomes involved in the complicated affairs of his colleagues, whether in business or in romance. In spite of everything, however, he retains his faith in the company and an unflappable optimism.
The manga centers on Harumi Minami, a 23-year-old new hire at a women's fashion magazine, who remains an unpopular virgin in both his work and private life. However, the magazine's handsome editor Fujihara notices him one day.
Nakamura Kano is an office lady with a secret… she’s a "Toku Otaku," a tokusatsu otaku who is obsessed with live action dramas of heroes, monsters and robots. She thinks they’re "JUST TOO COOL!" She’s so obsessed that she skips out on drinking with colleagues to watch it on TV and collects the DVDs, books and figurines. She lives her life by the code of the tokusatsu heroes, and constantly imagines them to help her through difficult situations. But this isn’t easy when all of her co-workers think that people who like anime and other childish things are weird, and they keep trying to make her socialize.
16 year old Miyahara Momiji starts working part-time at an izakaya called Koharuya.
22-year-old Kawaguchi Ryoko is joining the working world as a concierge at the famous Tokyo Quincy Hotel. She's working under the famous chief concierge Mogami Hai, who is an expert at knowing or figuring out exactly what customers need. Ryoko is eager to become a fantastic concierge herself, and help the lives of everyone who stays at the Quincy Hotel run more smoothly!
Young Yamane Rin just finished her training and officially became a flight attendant for Fuji Airlines. On her first day, she thought it was going to be a pleasant flight. Not so fast, Yamane. Apart from struggling to learn how to deal with difficult passengers, Rin meets the Chief Attendant, Hanazono Hinako, who appears to be sweet. However, that is just one of her many facets. In fact, she's a dauntless and win-by-a-large-margin kind of girl, who becomes a completely different person after work.