It is understood that the strike, organized by the "All-Japan Harbour Labor Group", will involve not only wharf workers, but also the staff of Port-related industries. Because "All-Japan Harbour Labor Group" is an organization composed of members such as ports, trailers, warehouses and so on, with about 20,000 members.

Reported that the main demand of the strike is to raise wages, the strike will begin on February 28, about March 1.

In fact, not only will the "All-Japan Gulf Labor Group" go on strike, but in the near future, many labor unions in Japan will declare a strike, which is the famous trade union movement "Chun Dou", which is held every spring in Japan.

The so-called Spring Dou, also known as "Spring Life Struggle" and "Spring Wage Struggle", is an annual spring organized by Japanese trade unions. The activities to raise workers'wages began in 1955.

Since then, each year, the major trade unions have jointly formed the "Spring Fighting Committee" to lead the Spring Fighting activities. Now it has become one of the fixed forms of Japanese labor movement. Spring Fighting usually takes the form of negotiation.