BHP could be bleeding $120 million a day if its Port Hedland workers walk off the job.

The Electrical Trades Union (ETU) says all its members at the mining giant's Port Hedland operations have voted in favour of strike action. The work stoppages could last anywhere from 30 minutes to a full 24 hours.

If it's the full day, that's the value of iron ore shipped out of Australia's biggest bulk export port every single day — gone.

“And we don't shy away from that, because the only thing that these big businesses understand is when the profit margins are hit,” ETU WA secretary Adam Woodage said.

The union remains hopeful BHP will come to the table and negotiate before any walkout happens. But the vote gives them the green light to pull the trigger whenever they choose.

Port Hedland is the world's largest iron ore export hub, handling more than 500 million tonnes annually. BHP is one of the three major miners using the port, alongside Rio Tinto and Fortescue. Any disruption at Port Hedland sends ripples through global steel markets.

What the workers want

The ETU hasn't detailed the exact grievances yet, but industrial action at WA mining sites usually revolves around wages, working conditions, and rosters. FIFO (fly-in, fly-out) workers often push for better accommodation, shorter swing rotations, and higher pay to match the cost of living in remote areas.

Woodage made it clear the union isn't bluffing. “The only thing that these big businesses understand is when the profit margins are hit,” he repeated, signalling that the ETU is prepared to cause real financial pain.

What happens next

BHP now has a choice: negotiate or brace for disruption. The union says it's ready to talk, but the strike mandate gives workers leverage. If no deal is reached, the stoppages could start at any time.

A 24-hour shutdown would halt the loading of ships at Port Hedland, backing up the supply chain. BHP's iron ore operations in the Pilbara are already under pressure from rising costs and softer demand from China, the biggest buyer of Australian iron ore.

For WA, the stakes are high too. Iron ore royalties are a massive chunk of the state's revenue. A prolonged strike could hit the budget and flow through to local jobs in Port Hedland and Perth.

Key Facts

  • ETU members at BHP's Port Hedland operations voted to endorse strike action
  • Stoppages can range from 30 minutes to 24 hours
  • A full-day strike could cost BHP up to $120 million in lost iron ore exports
  • Port Hedland is Australia's largest bulk export port
  • ETU WA secretary Adam Woodage is leading the union's push
  • The union is still open to negotiation before any strike