Communication, planning and organizing, problem-solving, collaboration, and conflict management are not considered skills for effective teamwork.

All of these skills are essential for the process of teamwork effectiveness. Why is it important? Simply because employers are paying more and more attention to candidates who possess these abilities. Besides, in case you think such requests are just for those who intend to get a management position, I'm afraid that's not completely the way it is. Yes, these skills might be requested for any applicant to any position. We never know, so you'd better prepare yourself.