This project work deals with strike action and its effectiveness in achieving union aims (A case study of Nigerian Union of Teachers). The unsuited in an all times record of cost working hours, unprecedented spate of strike. The study is focused on the following issues;(i) to identify the causes of trade dispute (ii) to find out if strike is the major tools for achieving union aims and (iii) and the effectiveness of strike action in achieving unions aims. This project also discussed the early stages and development of trade unions, legal provisions on union versus employers and the evaluation of strike as one of the tools of trade union in achieving their aims from management. Furthermore, the political, social and economic implications of strike and the various strikes embarked upon by NUT were also discussed. The third chapter covers the design of the study, population selection and sample size determination. Also are the questionnaires design, research procedure and the method of treatment of data. The data collected were presented and analyzed in chapter four in analysis, the secondary data were analyzed first using the chi-square method. Finally, based on the finding, the following conclusions, and recommendations were made. The management should try to reduce the air of dispute arising in the form by trying to avert the caused of dispute which are likely to occur. More effort should be made to integrate the whole members of the plant into the union and make them recognize the need of collective bargaining. Joint consultation should be reasserted to when disputed arises and where a strike is inevitable, the necessary steps of resolving it must be met.