Protect the Boss (2011)

No Eun Seol has struggled to find a job. When she gets the job as secretary to Cha Ji Heon the youngest son of a rich family, she soon discovers that secretary duties go beyond the ordinary. She must help her boss cope and function in normal society. Add to that a rival cousin hoping to take over the company with a mother willing to anything to help her son succeed, a loving and angry father that desperately wants his son to succeed, and you have family intrigue, mixed with comedy and romance.