There's no such thing as work-life balance for poor Nayul, thanks to her evil boss, Sijin. Not only does he make her work overtime constantly, but she's also dumped by her boyfriend because of it. Fed up with Sijin's demonic ways, Nayul storms to his office to complain... and finds him jerking off! Though the sight is initially grotesque, Nayul finds herself oddly turned on. Somehow, she ends up banging her boss on his desk, which leads to an irritating yet steamy colleagues-with-benefits relationship. But how long can Nayul keep this shameful secret from her prying ex and gossipy coworkers... More...

There's no such thing as work-life balance for poor Nayul, thanks to her evil boss, Sijin. Not only does he make her work overtime constantly, but she's also dumped by her boyfriend because of it. Fed up with Sijin's demonic ways, Nayul storms to his office to complain... and finds him jerking off! Though the sight is initially grotesque, Nayul finds herself oddly turned on. Somehow, she ends up banging her boss on his desk, which leads to an irritating yet steamy colleagues-with-benefits relationship. But how long can Nayul keep this shameful secret from her prying ex and gossipy coworkers?

Original Novel
Original Webtoon

Official Translations:
R19: English, French
R15: English

Kim Nayool, a hard working office woman, had recently been dumped by her boyfriend due to her being too busy with work all the time, even cancelling her own anniversary trip to work on a project. Making things more difficult, a terrible work PC destroys the 3 days of working overtime. The cause of all her unhappiness and misfortune, Kwon Sijin, her perfectionist, overworking boss, CEO of Right Communications. With the desire to see the project through, Nayool had no choice but to head over to the office in the middle of the night to finish it. She wasn’t expecting anyone else to be there, but her boss’s office light was on. Tired, overworked and needing to voice her frustrations she barged into his office to finally speak her mind, only to find him in a very compromising position…

Note: The first korean cover has the official english title as <I Say Please Be Quiet and Take Off Your "Something"> before getting a new cover and title change to <Be Quiet and Don't Ever Smile in the Office>. {Sources; (1), (2)} Less...