겸직은

In a sentence

• 그는 겸직은 어려움이 많다고 생각했다.

  He thought that holding multiple positions concurrently was challenging.

  Here, '겸직은' is a noun meaning 'holding multiple positions or jobs simultaneously,' and it's used to introduce the subject of the sentence, emphasizing its challenges.

• 회사의 정책상 겸직은 허락되지 않는다.

  Under the company's policy, holding multiple positions is not allowed.

  In this sentence, '겸직은' explicitly refers to the act of holding multiple job responsibilities as a subject of the restriction.

• 그는 교수로서의 업무와 연구소 소장으로서의 겸직은 언제나 바쁘다.

  His dual roles as a professor and head of the research institute always keep him busy.

  Here, '겸직은' signifies the dual responsibilities taken on and stresses how they contribute to his busy schedule.