While You Weren't Watching is pretty good
https://www.mangago.me/read-manga/while_you_were_letting_your_guard_down/
https://www.mangago.me/read-manga/incidentally_dyed_by_spring_s_love/
https://www.mangago.me/read-manga/the_new_employee/
https://www.mangago.me/read-manga/cherry_magic_thirty_years_of_virginity_can_make_you_a_wizard/
https://www.mangago.me/read-manga/no_love_zone/
https://www.mangago.me/read-manga/punch_drunk_love/ https://www.mangago.me/read-manga/dirty_high/
https://www.mangago.me/read-manga/you_and_i_can_t_do_this/
Hope you like them ^^
It's not really an office yaoi but: One-Room TA is pretty good (minus one scene which thankfully didn't ruin the whole thing)
Need yaoi office recs would appreciate links and hoping they are not problematic