In this article I shall try to examine some problems in labour-management cooperation. The purpose of this study is the analysis of some effects on union action to business policy. But, as the functional approach to union action can not be under-stood that problems, I have to take care of the problem in which business behaviour effects especially from labour union. Then, I shall review on the situations in labour-management cooperation by distinction of aspects of economical and Political labour union actions. Hence, I should like to analyze both the economical significance and conditions in labour-management cooperation through the comparison of Japanese Productivity Movement to such cases in American labour-management. So, I recognized the facts that basic condition in security of employment by the analysis of Scanlon Plan at the Lapoint Machine TooI Company, and l shall try to pointe out that the aspects of economy in security of employment are place in common with labour-management cooperation.