Five policemen were also injured, as they stepped to prevent the workers from blocking the Dhaka-Tangail highway.
Workers of Parkinson and Parkstar garments began protests in Barabari area in the morning. Soon, workers of some other factories joined in.
Gazipur Shilpanchal Police Station Inspector Mohammad Selim said the workers of these two factories called out those working in other factories .
When police intervened, they met a hail of brickbats .
Clashes erupted leading to a baton charge by police.
When that failed to disperse the workers, police lobbed teargas shells to scatter them, witnesses said.
Later facory managements including those of Parksin and Parkstar garments slapped notices declaring the units as closed for the day , bdnews24.com Gazipur Correspondent reported.
A Parkinson worker, Rozina Akhter, told bdnews24.com they wanted minimum Tk 8,000 wage, hike in attendance bonus, six-month maternity leave among other demands.