INTRODUCTION
The early 70’s saw and witnesses the end of political crisis and at its time organized labour which was put into the coffin during the civil war was once released free its dilemma of whether or not to forget industrial action in the life rest national security. With the civil war, labour militate its demand for improvement in the wage structure and other condition of employment throughout the country. Workers protest coupled with the government growing realization of the poor economic states of the working class ultimately led to the establishment of certain commission like the Adebo commission.
Since 1970 to the present time, workers demand have increased could not satisfy the needs of the employees in the faces of the economics recession which employees force management to access to their demand. In this study, however, we are going to examine the cause of strike, its consequences and effectiveness as a weapon of trade union in achieving their aims. Mention of course would briefly be make of the history and development of trade unionism in Nigeria.
Strike as defined by section 37 (1) of trade dispute Act No 7, 1976 is a cessation of work by a body of employed persons acting in combination or a concerned refusal under a common understanding of any number of employed persons to continue to work for an employer inconsequence of a dispute, done as a means of compelling their employer on any person or body persons employed to aid other workers.
As its stand, that force, strike is one word that torn the flesh of management: each time as strike occurs, substantial out is lost during the first general strike of 1945, 1993 (Asu strike Jan. 2000 (NLC strike) when the government disagreed with civil servant wages and allowances about thirty working day were lost. Output dropped substantial, as a re-question government had to  upgrade salaries in a bid to resolve between 1980, 82, 1993 and 1999 to zoo respectively there was a spot of industrial  and trade disputes and work stoppages in the country requiting in a high loss in man hours and productivity. This spate of industrial unrest was evidently result of lack of adequate attention to the human labour in business organization. There has been giant sagging the fact that a human factor is of paramount importance in industry, commercial and the civil service.
The management pre-occupation with maximizing profit has always made them to pay little or no attention to the human factor in the organization. This relegation of the human factors to the background by management has been a serious but latent cause of increase in strike action on with its resultant consequences. It is the purpose of this work to probe into this and acquaint the management with the tools for combating this hydra headed monster.

REVIEW OF RELATED LITERATURE
2.1    THE EARLY DAYS AND DEVELOPMENT OF TRADE UNIONISN IN NIGERIA.
The pre-colonial era was subsistence economy and total  absence of standard currency. Trade was then carried by barter as a  result, wages employed started with the activities of the European explores like Mungo Park who needed guides and carried for their exploits and would therefore, not hesitate to engage any offering of his service paying him money in return, the royal Niger company which end the power to administer and make treaties in the basis of Niger. By 1990 paid employment increased more and more as a result of the intervention of the British government in revoking the character of the royal Niger company and taking over of the protectorate of Northern and Southern Nigeria. As a result of this there was an urgent need to develop the inter-land so as to facilitate commerce and achieve the chief objectives of occupation to provide an outlet for British manufactured goods and a source of raw material for  British factories. This led to the construction of access roads and rails to facilitate transportation thus more hands were needed.  August 19th, 1912, saw the birth of a trade union in Nigeria thus the Southern Nigeria Civil service union came into existence. This was later changed to Nigeria Civil service union in 1914 after the amalgamation of the Northern and Southern Nigeria.
This was followed by the Nigeria railway staff union in 1919.
By 1931, the railway workers union and the Nigeria union of teachers came into existence.  The railway workers union was first embark on a strike as a result of the introduction of the hourly wages in the company. This was then led by a young  darling apprentice named Michael Alhokhamian  Ominulmoudu.
Following the passage of trade union ordination in 1938, many trade unions were formed, within a decade over one hundred and forty four (144) trade unions were already in existence with membership of one hundred and forty four thousand members. The rapid increase of trade unions has been ascribed to many factors among which are the recognition of trade unions.
By 1938 ordinance, the economic implication of the second world war, was request of a cost of living allowance (cola) by the government employee in by some nationalist, the Enugu of 1949 and the infamous government order to general defense regulation of 1942 which outlawed strike and lock outs during the war period. With the timely collaboration of the nationalist, (political) leaders the first central union was formed. The trade union congress of Nigeria, the TUCH did not last long because of fighting among the leaders of the union, cohesiveness was looking and all attempts to forestall a united front toiled and in 1950 the Nigeria labour congress came into existence. All efforts to bring about peaceful co-existence failed.  By 1953, the all Nigeria trade union federation was born. This merge was also short-liked in 1961, after independence, the union had split into two, one led by M.A. Moudu was called Nigeria trade union congress while the other half called the trade union congress of Nigeria which was led by Alhaji H.P. Nebola.