India, March 18 -- A nine-judge Constitution bench of the Supreme Court on Tuesday said it will examine the legal correctness of the 1978 judgment of a seven-judge bench giving an expansive interpretation of the term "industry" to govern labour relations.

On February 21, 1978, a seven-judge bench delivered a verdict on the definition of the term "industry" while deciding the plea of Bangalore Water Supply and Sewerage Board and expanded the definition, which brought millions of employees in hospitals, educational institutions, clubs and Government welfare departments under the protection of the Industrial Disputes (ID) Act, 1947.

On Tuesday, the nine-judge bench headed by Chief Justice Surya Kant commenced the hearing on a batch of peti...