The objective of this study is to assess the growth of industrial conflict during the phases of economic development from 1921 to 1984 and to identify the economic and institutional factors which could have influenced conflict over this period. Three indicators of conflict, viz., industrial disputes, workers involved, and mandays lost, have been considered. Both trends and cycles have been identified. These differ for three sub-periods, 1921-38; 1939-60; and, 1961 to 1978. There are also differences for the three indicators. Nevertheless data indicate similar increase in conflict, with cyclical changes. The determinants of conflict also differed from one sub-period to another. In the first period, rising prices, and political events and trade union history were the leading factors. The second period was marked by the increasing influence of wages and consumer price index. For the third period, wages, inter-union rivalry, and political events explained the growth in conflict. The need for further research in economic and social history is indicated by the study.