Centinela miners ratify new contract with 94.49% backing after equality strike
SANTIAGO — Workers at Chile’s Centinela copper mine have ratified a new collective contract, turning a provisional settlement into an agreement approved by their membership. The Distrito Centinela and Minera Esperanza unions reported 94.49% support among those voting, with turnout of 97.32%. The result, announced on October 18, ends the strike that began on October 7.
The decisive change since the preliminary deal is the workers’ vote. Pamphlets previously reported the tentative settlement while ratification was pending. The new result establishes that the membership has accepted the contract; it is a concrete development beyond the earlier return to negotiations.
The dispute centred on unequal pay and benefits for employees who, according to the unions, performed equivalent work but belonged to different organizations. Radio Bío Bío reported that the agreement covers 709 workers, approximately 22% of the company’s directly employed workforce. Union leaders said advances were concentrated in monthly earnings, including basic salaries and production bonuses.
The contract runs for 36 months and includes a 24 million Chilean peso payment for the conclusion of negotiations and renewal of working schedules, according to the company’s account carried by El Diario de Antofagasta. That payment should be distinguished from recurring monthly income: a signing payment and an improvement to base pay have different consequences for workers after the initial settlement.
Labor publication Poder Laboral reported that union leaders identified an equality and equity clause as the central achievement. Their assessment places the agreement’s importance beyond the size of the immediate payment. The issue was whether workers doing comparable jobs could secure protections against persistent differences in their conditions.
Company management presented the settlement differently. In its published statement, Centinela emphasized the autonomy of individual unions and its ability to negotiate separate agreements. The company rejected the idea that this amounted to discrimination. The existence of a settlement therefore does not mean management and the unions now share the same interpretation of the dispute.
Talks resumed on October 13 through voluntary mediation led by the regional labor authority in Antofagasta. Before the breakthrough, three workers had undertaken a hunger strike. Reuters reported that the company maintained normal production during the industrial action; its production figure for Centinela in 2025 was 240,400 metric tons of copper.
ARCHIVE — Copper sheets transported by rail toward Antofagasta, Chile, 18 August 2010. Photograph: Benjamin Goetzinger, CC BY-SA 4.0. This image illustrates Chile’s copper economy; it does not document the 2026 strike.
The settlement illustrates a distinction often lost in commodity-market reporting. Production continuity measures how much copper a company delivers. It does not measure whether workers consider the distribution of pay and benefits fair. Workers’ demands remain substantive even when a business succeeds in keeping output moving.
For the labor movement, the next test is implementation. The approved contract must deliver the recurring earnings and equality protections that union leaders say they secured. A strong ratification vote records a clear mandate from the membership; sustained organization will matter as those promises become day-to-day employment conditions.
The outcome also shows why a tentative agreement and a ratified contract should be reported separately. The first emerged from bargaining between representatives. The second required a decision by the workers themselves. At Centinela, that decision has now been made.
Sources and further reporting
Cover photograph: ARCHIVE — Óxidos Encuentro open pit and processing facilities in the Centinela mining district, Chile, 6 December 2017. WeHaKa, CC BY-SA 4.0. The V9 card crops the photograph uniformly and adds headline/branding; the adapted card is shared under CC BY-SA 4.0. Neither archival photograph shows the current strike.
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