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The actor plays CEO Eun Hwan Ki in his upcoming tvN drama 'Introverted Boss', who is so introverted, he can't leave his office to get off of work because of all the employees waiting outside! 

The teaser begins by showing the clock, reading a little past 11 PM, and the employees of the company beyond exhausted, watching the minutes tick down while waiting to go home. Yeon Woo Jin says, "Until the late hours, in our company, everyone focusses on their tasks passionately, as if it were their personal matters, so how can the CEO, me, leave before them?" 

It's a game of wack-a-mole, as the boss and the employees peer over at one another, stuck in the office. 'Introverted Boss' starring Yeon Woo Jin, Park Hye Soo, Gong Seung Yeon, Yoon Park, Ye Ji Won, SECRET's Hyosung, Stephanie, and more premieres January 9!