Office Romance:
On and off
Ameiro Paradox
http://www.mangago.zone/read-manga/souteigai_love_serendipity/
http://www.mangago.zone/read-manga/doushiyoumo_nai_keredo/
http://www.mangago.zone/read-manga/ore_to_joushi_no_kakushikoto/
http://www.mangago.zone/read-manga/muka_tsuku_douryou_to_sefure_ni_narimashita/
http://www.mangago.zone/read-manga/noru_ka_soru_ka/
http://www.mangago.zone/read-manga/work_in/
http://www.mangago.zone/read-manga/renai_nante_yurushimasen/
http://www.mangago.zone/read-manga/kaeru_no_prince_sama/
http://www.mangago.zone/read-manga/friend_line/
http://www.mangago.zone/read-manga/senpai_danjite_koidewa/
http://www.mangago.zone/read-manga/ookami_papa_wa_hitsuji_tsura_shite_yatte_kuru/
http://www.mangago.zone/read-manga/ijiwaru_shinai_de/
http://www.mangago.zone/read-manga/my_purrfect_boss/
http://www.mangago.zone/read-manga/hajimari_wa_naka_kara/
http://www.mangago.zone/read-manga/sono_suki_honto/
These are my fav and must reads:
http://www.mangago.zone/read-manga/docchi_mo_docchi/
http://www.mangago.zone/read-manga/taka_ga_fukuen/
http://www.mangago.zone/read-manga/konomi_ja_naka_to/
You can try these tags:
http://www.mangago.zone/tag/business
+men/?page=5
http://www.mangago.zone/tag/Co-Workers/
Work, Fight Love - its a black and white webtoon and its great!
can anyone recommend me some office work shounen ai/yaoi