The China-based BYD Electronics, which supplies mobile parts to Nokia and employs 2,000 workers has declared a lockout at its unit here.
Police said talks had already been held between representatives of employees and management last week on the workers demands, which include recognising the Centre of the Indian Trade Union as the factory union and also a three tier shift system, but to no avail.
A further round of talks are slated for November 8.
On October 28, a section of workers resorted to a sit-in strike, reportedly irked by the delay in finding a solution, which the management termed illegal, as they had not been given any notice about it.
In turn the management outsourced semi-skilled and skilled workers through a manpower agency to complete production targets.
Police said they had received a complaint from the agency that day that workers sent to the company were being held captive by striking workers, after which police entered the factory premises and persuaded them to clear the area. The workers then gave up the strike.