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Copper Mine Labor Disputes Prompt Strike Votes in Chile and the Philippines
By Drooid · · How we work
Strike Votes at Escondida, Centinela and Padcal Mines
Supervisors at BHP’s Escondida copper mine in Chile rejected the company’s final collective-contract proposal on Wednesday September 30, with 95 % voting for strike action. The vote triggered a mandatory five-day government-led mediation under Chilean law.
At Centinela mine, owned by Antofagasta Minerals, members of the Minera Esperanza and Distrito Centinela unions (708 members) voted on Monday September 28. 98.73 % supported a strike and rejected the company’s offer.
In the Philippines, the Philex National Mines and Allied Workers Union (NAMAWU) submitted its strike-vote results to the Department of Labor’s National Conciliation and Mediation Board on Thursday October 1 after rejecting Philex Mining Corp.’s improved offer on September 22 and citing a bargaining deadlock.
Background & Context
Collective-bargaining negotiations for copper-mine workforces in Chile require a formal strike vote followed by government mediation before a stoppage can be legal. The Escondida vote followed a fatal maintenance accident on September 23, which led the supervisors’ union to reject BHP’s request to pause talks on September 25. Philex’s Padcal mine, a 45-year-old operation in Benguet province, had a five-year record of industrial peace, but the union now claims a deadlock in negotiations for a new CBA.
Data & Statistics
- Escondida: Produced 1.26 million t of copper in BHP’s 2026 fiscal year; payable copper fell 7 % to 1.05 million t. BHP guides 2027 production at 1.00-1.10 million t.
- Centinela: Produced 240,400 t of copper in 2025; first-half 2026 concentrate output fell 13 % YoY to 69,700 t. A second beneficiation plant slated for end-2027 could add 144,000 t per year.
- Padcal: Copper concentrate output was 44,172 dry t in 2025, an 8 % decline from 2024. The mine’s life has been extended to December 31 2028.
Official Statements & Responses
- Antofagasta Minerals told *Diario Financiero* that the strike vote is a normal step in regulated collective bargaining and that the company will continue to seek an agreement through dialogue.
Verbatim Quotes
- “If the strike [proceeds], it may lead to reduced operating capacity,” — Philex Mining Corp.
Conflicting Reports & Gaps
- The Philex filing did not disclose the exact vote margin or specify which Padcal operation would be affected, leaving the timing of any strike unclear.
- No production-impact figures have been provided for Centinela following its vote, and the company has not indicated whether the second beneficiation plant’s 2027 commissioning could be delayed.
What’s Next
- In Chile, the Escondida and Centinela disputes will enter a five-day mediation period; either side may agree to a further five-day extension.
- Philex has indicated ongoing negotiations with the Labor Department, but no specific timeline for a strike commencement has been announced.
- Antofagasta’s second beneficiation plant at Centinela remains on track for a 2027 start, contingent on the outcome of labor talks.