The unit is linked to Gitanjali Gems promoter Mehul Choksi, a co-accused in the Rs 11,384 crore Punjab National Bank (PNB) scam.
Enforcement Directorate had raided the unit last week.
The workers under theaegis of the CITU (Centre of Indian Trade Unions) held a demonstration in front of the SEZ entrance gate demanding intervention of the government and provide them alternative employment amid "rumours" that the unit may be sealed.
Around 900 workers areworking at the SEZ,located at Ravirala village in Maheshwaram mandal on the outskirts of the city.
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