These violations, he said, included late payment of the salary, taking back the money from the worker after making payment through the bank and keeping passbook and signed checkbook of the workers by employers.
"The company heads have been asked to produce all the documents before the labour departments court on the scheduled dates they were informed to come," he said.
Police case has been filed against three companies, he said.
"We have also issued an advisory that no worker can be sacked from the company until the labour court gave any verdict," he added.
Under the operation, 10 teams of five officials each has been constituted which conducted raids at different locations across the city and keep a check on the wages paid to the labourers according to their skills.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)