For most, or maybe all, of top management in any country, a news that their employees started to set up a labor union in the workplace may not be an welcome news.
However, it is bound to happen in any workplace that is seeing an increase in volume of business and corresponding increase in number of employees.
This post is about a very basic information on labor union establishment in Korea based on Korean labor laws.
First, about the number of workers required to set up a labor union. Simply saying, it takes two persons to set up a labor union in Korea. Setting aside all other conditions, the small number of people required to set up a labor union seems to be a factor that encourages workers to easily resort to the creation of a labor union to solve any workplace problems they have in Korea. Other countries seem to require more persons than TWO for establishment of a union. For example, if I remember correctly, Australia requires 50 workers to set up a union. (Correct me, If I am wrong 
Second, who is allowed by law to join a labor union? Definitely, not an employer. But not just an employer. Those who represent interests of an employer are also not allowed by law to join a union. For example, high-level managers, team chiefs, and especially managers or staff who work in the personnel department. However, there is no clear-cut divide on this matter. I often see a company where even team chiefs are members of its union. This is often the case with companies where balance of power between labor and management is broken or where managment did not pay sufficient attention and care to set things right.
Third, actual procedures of formally establishing a union. Korean labor law adopts an approach of registration-based establishment of a labor union. This means any labor union can be set up simply by submitting required papers such as union bylaws to the ministry of labor. No validation or voting procedures as in the United States.
Of course, the mere fact of union establishment is not a serious issue. What comes next, collective bargaining or strike, will be a real challenge for management. But that will need another post.
