What can avoid labour strike?

Labor strike could be damaging to the economy and cause inconvenience to ordinary people.  What causes labor strike? Of course, the most direct cause is poor payment and working conditions. However, there are some fields, which do not have frequent labor strike, but still suffer poor payment and poor working conditions. Why? Because of the competition. Labor strike is much more likely to happen in an oligopoly industry than in a competitive industry. In a competitive industry, labor strike risks their company's fate and when a labor strike happens, labors are very likely to lose their jobs as their company will lose the competition.