Workers at BHP's Port Hedland iron ore operations in Western Australia voted in favor of industrial action. Members of the Electrical Trades Union (ETU) and the Australian Manufacturing Workers Union (AMWU) endorsed work stoppages ranging from 30 minutes to 24 hours.
The unions seek improved pay and conditions following six months of stalled negotiations. Port Hedland serves as the sole shipping gateway for BHP's Pilbara iron ore production.
BHP estimates potential daily costs of over $120 million if exports are disrupted. The company maintains contingency plans to mitigate the impact of the strikes.