As the strike progressed through the months, Samant's militancy in the face of government obstinacy led to the failure of any attempts at negotiation and resolution. Disunity and dissatisfaction over the strike soon became apparent, and many textile millowners began moving their plants outside the city. After a prolonged and destabilizing confrontation, the strike collapsed with Samant and his allies not having obtained even any concessions. The closure of textile mills across the city left tens of thousands of mill workers unemployed, and in the succeeding years the most of the industry moved away from Mumbai, after decades of being plagued by rising costs and union militancy. Although Samant remained popular with a large block of union activists, his clout and control over Mumbai trade unions disappeared.
-http://en.wikipedia.org/wiki/Dutta_Samant

A perfect example of why class antagonism is a bad policy all around. A union must be able to offer something to the management and owners. More efficency, working harder, stability, and the like.