Both take place in an office setting and about in-office politics. It also contains wire-tapping and the tapper growing to respect/like the tappee due to listening and learning about their true selves. It also becomes like an obsession for them to listen in on the person's life. Chief Kim is a more lighter drama with some heavy themes, where in My Mister is a heavier with some light scenes.
Im Eun sub's character remind me of Park Dong Hoon in My Mister. both of them look kind of lost in the world full of loud people. an d trough the story we come to know them and their thoughts and this is so calming. both drama deal with deep sadness yet you come out of them with a feeling of being healed.
Both dramas have unique plots that are written by the same writer and have a melodramatic feel to it along with the part where the main leads are cold to each other at first, but warm up to each other as they spend more time together. Another Miss Oh is just a little bit more lighter and funnier. Both of them also have side plots