The three workers, along with several other colleagues, were working at the construction site for textile firm Polytex Far Eastern in Bau Bang District when a 20 m-tall crane collapsed, trapping them beneath.
Three people were killed instantly, while three others were seriously injured and taken to the local hospital.
The accident is being investigated.
Taiwanese-backed Polytex Far Eastern received the investment certificate for a textile production project in Binh Duong in 2015 with a phase 1 registered capital of $274 million. The project was then the company's third largest plant, after the ones in mainland China and Taiwan.
Polytex Far Eastern is one of Taiwan's leading business groups.