Two industrial units in Vasai were found flouting the shutdown rules and employing workers on their premises on Monday.
The Valiv police found around 1000 employees, men and women, in the two units.
The Kunal Industrial Estate in Gavraipada and a unit in Shalimar Compound, Vasai Phata were operating. The matter came to light when cops were patrolling the area.
The workers were found wearing masks. Most of them claimed to be residing in and around their work place.
While no Covid-19 case has been reported from the Palghar district, the administration had invoked the Disaster Management Act since March 17 when all non- essential shops and establishments were shut down.
So far 166 cases have been filed against shops and establishments flouting shutdown orders.