Some may disagree since the situational set-up is not the same (ie in Marriage, Not Dating they are not in a boss/employee relationship but a contract marriage relationship) but I see very strong similarities between the FL and ML interactions.. The ladies are both straight up FEISTY: physically feisty and argumentatively feisty and determined-to-be-themselves-when-they-don't-necessarily-feel-accepted-by-society feisty. In both dramas, the MLs are equally assertive and give back as good as they receive and you can tell they subconsciously like the challenge the FL puts up as they find themselves falling for the girl against their wishes. The banter is right up your Beatrice&Benedict alley (my favorite type of romance to watch).
Both shows have a neat freak and germaphobic boss however the differences are big in Protect The Boss the lead girl is a tomboy and loves to fight they don't really live together while in Just You the lead girl is a sweet girl who loves her flowers but what both shows carry in common is boss and employee falling in love.
Donovan is an American model in search of a woman he's lost touch with. Pam is a kindergarten teacher. When her grandfather becomes sick, Pam learns he'll need to undergo an expensive operation. In order to raise the funds, Pam takes a job working for Palee Modeling where she's assigned to work as a manager and personal interpreter for Donovan. She's soon wrapped up in both his work and personal affairs.