Negotiations between BHP and unions representing workers at its Western Australian iron ore operations in Port Hedland failed to reach an agreement on September 8, according to Reuters.

BHP presented an updated proposal during the day's talks, offering a 17% pay rise for most workers over four years, a 25,000 Australian dollar transition payment paid over two years, and increased roster allowances.

The talks between BHP and the unions have been ongoing for several months without resolution. The three unions under the Combined BHP Ports Unions banner have met with BHP nearly every week in recent months to negotiate a four-year agreement.

Negotiations are scheduled to resume next Tuesday, September 15, with assistance from the Fair Work Commission, the report said.

Port Hedland is the world's largest iron ore export hub. BHP ships approximately 80 million dollars worth of iron ore through the port daily.