Punch Drunk Love
Honey Bear (Not office workers, but bakery workers)
An Egocentric Way Of Thinking
Completed:
https://www.mangago.zone/read-manga/reality_lover/
https://www.mangago.zone/read-manga/on_or_off/
https://www.mangago.zone/read-manga/my_purrfect_boss/
https://www.mangago.zone/read-manga/the_new_employee/
https://www.mangago.zone/read-manga/no_love_zone/
https://www.mangago.zone/read-manga/kick_off/
https://www.mangago.zone/read-manga/you_and_i_can_t_do_this/
https://www.mangago.zone/read-manga/how_to_train_a_good_for_nothing_rich_boy/
https://www.mangago.zone/read-manga/why_not_ceo/ (one of them is actually student, but he is "working" in the office for the time being)
On going:
https://www.mangago.zone/read-manga/speak_of_the_devil/
https://www.mangago.zone/read-manga/no_moral/
https://www.mangago.zone/read-manga/love_work_balance_jujucat/
https://www.mangago.zone/read-manga/the_kang_s_yeesu/
https://www.mangago.zone/read-manga/i_m_here_to_take_my_revenge/
I hope I didn't confused plot and all of them are office romance
Comedy BL Office Romance? Manhwa/hua preferably... any suggestions? (=・ω・=)