She could be subject to up to a year in jail and/or a maximum fine of Bt100,000, the Labour Protection and Welfare Department said yesterday.
Uemphorn Suebniam, the owner of Ban Recycle shop, will soon be summoned for questioning by the department, deputy director-general Suwit Sumala said.
However, he did not say if evidence the agency was compiling was against or in support of the owner.
The Employment Department said yesterday that three of the people killed in the explosion were Cambodian, including a child, and were entitled to protection under Thai labour law – and their families to compensation stemming from their deaths at work.
Director-general Prawit Khiangphol said insurance would be soon required of Thai employers that hire migrant workers.