What do you know about the labour force of Ahmedabad before 1980’s?

Ahmedabad is a prosperous city. Before 1980s, there were 60 textile mills with a labour force of 1,50,000 workers employed in them. These workers had over the course of the century, acquired a certain degree of income security. They had secure jobs with a living wage. They were covered by social security schemes protecting their health and old age. They had a strong union. These unions not only represented the labourers in dispute, but also ran activities for the welfare of labourers and their family.