Four inhabitants of the Indonesian island of Pari have sued Swiss-based major buildings materials company Holcim (from 2015 to 2021: Lafarge Holcim). In July 2022, they filed a request for conciliation before the Justice of the Peace of the Canton of Zug, Switzerland. This is a necessary step required by the Swiss Civil Procedure Code.
The plaintiffs are supported by three NGOs: HEKS/EPER (Switzerland), the European Center for Constitutional and European Rights (ECCHR) and WALHI (Indonesia).
The plaintiffs request:
•	proportional compensation for climate change-related damages on Pari
•	reduction of CO2 emissions by 43 % by 2030 and by 69% by 2040, relative to 2019 levels
•	financial contribution to adaptation measures on Pari
The claim can be seen as novel and unprecedented as it combines two approaches: reduction of GHGs and compensation.

On February 1, 2023, following a Conciliation Hearing before the Justice of the Peace in October 2022 where no settlement was reached, the NGOs supporting the plaintiffs announced that the plaintiffs had formally lodged a lawsuit against Holcim with the Cantolnal Court of Zug (Kantonsgericht Zug). 

In October 2023, Cantonal Court of Zug granted the plaintiffs’ request for free legal aid (art. 117 et seq Civil Procedure Code). According to a press release of HEKS, the judge held that the two requirements for granting free legal aid, (a) insufficient sufficient funds to pay for legal cost and (b) the legal petition does not seem to be lacking any chance of success, were met.

The legal basis on which the plaintiffs rely is Article 28 of the Swiss Civil Code (infringement of personal rights) and Article 41 of the Code of Obligations (redress for unjust harm). As to Holcim's historical emissions, the plaintiffs rely on a Study by Richard Heede/Climate Accountability Institute. 

On 17 December 2025, the Cantonal Court of Zug rendered a procedural decision, allowing the case to proceed to the merits. In particular, the decision holds that the plaintiffs have standing to sue. The respondent announced to appeal the decision.

Asmania et al. vs Holcim

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Asmania et al. vs Holcim - decision

Filed

Switzerland

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An aim to achieve a quantifiable outcome within a given time-frame, set by an institution such as a national government.

Policy instruments are techniques or tools used by governing authorities to promote certain policies in order to achieve predetermined goals. Put simply, instruments are how a government tries to achieve its goals, with this taxonomy being focused on national policy instruments.

Risk is the potential for adverse consequences resulting from the dynamic interplay between (climate-related) hazards, exposure, and vulnerability of affected human or ecological systems.

Groups  of people who are adversely affected by climate change or the response to it

A set of principles, processes, and practices that build economic and political power to shift from an extractive economy to a regenerative economy.

Justice is the ethical and political framework that addresses fairness, including issues of responsibility, rights, and structural inequity.

Renewable energy means all forms of energy produced from renewable sources in a sustainable manner.

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Molecules in the atmosphere that play a key role in the greenhouse effect by trapping heat radiating from Earth’s surface.

Area of the economy in which actors engage in identical or related activities.

In human systems, the process of adjustment to actual or expected climate change and its effects, in order to moderate harm, increase resilience or exploit beneficial opportunities. In natural systems, the process of adjustment to actual climate change and its effects; human intervention may facilitate adjustment to expected climate change and its effects.

The management and allocation of funds, assets and investments to meet various objectives

Zoning and spatial planning are both methods for guiding the distribution of people and activities in a space, and are regulatory restriction.

A target to reduce the prevalence of a greenhouse gas over a specific time frame

A commitment to balance GHG emissions with removal by a certain point in time, effectively reducing the net emissions to zero

Using laws and the legal system more broadly to protect vulnerable entities

Either money or something of monetary value is transferred between two or more organisations, people or countries.

Coastal zone and marine-related actions and measures to adapt and increase resilience to climate change

Actions or measures to adapt freshwater, coastal and marine systems to climate change.

Hot temperature extremes are daily maximum temperatures  that were exceeded on average once in a decade or once in 50 years, and includes heatwaves.

The release of heat-trapping gases, primarily from human activities such as burning fossil fuels, agriculture and industry.

A long-lived, colourless gas, chiefly emitted from fossil fuel combustion, deforestation and cement production.

A potent, short-lived greehouse gas, largely released from livestock, fossil fuel extraction and waste management.

Risks to the ecosystem health of the marine environment, including ocean warming, ocean acidification, and ocean deoxygenation, harming biodiversity, species health, ecosystem services, and coastal community livelihoods.

Extreme weather refers to events where a weather variable exceeds (or falls below) a threshold. Meaning it is significantly different from the average or usual weather pattern.

Terrestrial means "of the earth" and relates to the risks to ecological system that includes all living organisms and their interactions within land-based environments, such as forests, grasslands, and deserts.

Oil is a combustible liquid fossil fuel composed mainly of hydrocarbons, occurring as crude oil and refined into petroleum products such as petrol, diesel and kerosene.

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People whose health, both mental and physical, makes them more vulnerable to the effects of climate change

Any compulsory, unrequited payment to the government levied on corporations or individuals. This can be for environmental reasons, such as introducing a Carbon tax to set a price that emitters must pay for the greenhouse gases they emit.

This sector involves managing waste treatment, sanitation, pollution control and environmental cleanup.

Activities that involve planning, designing and building infrastructure, residential, and commercial structures.

This sector involves the wholesale and retail selling of goods.

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Activities that provide lodging, food, and entertainment services to guests, including hotels, restaurants, and resorts.

This sector includes firms and individuals offering specialised expertise in fields such as law, accounting, consulting, science and engineering.

Activities involving the catching, processing, and selling of fish for food, recreation, and industry.

Climate change can have a range of impacts on technological system. Extreme weather events can cause infrastructure failures like power outages or damage to roads and bridges, as well as the impacts from waste following natural disasters. Human activities also cause technological impacts, such as the risks posed by oil spillage and leaks.

Any substance with chemical properties that can cause physical harm to people or damage the environment, including ammonia, carbon monoxide, phosphine, chlorine, arsenic, cadmium, mercury, pesticides, dioxins, microplastics, benzene, asbestos, aflatoxins, fluoride, methanol, and toxins from marine sources.

Climate change impacts our society by disrupting the natural, economic and social systems we depend on. Physical hazards and underlying vulnerabilities can lead to increased resource competition for food and water, which can heighten the risk of conflict.

Slow onset events evolve gradually from incremental changes over many years or from increased frequency or intensity of recurring events. As defined in the Cancun Adaptation Framework (2010), slow onset events include risks and impacts from rising temperatures, desertification, biodiversity loss, land and forest degradation, glacial retreat, ocean acidification, sea level rise, and salinization.

Geohazards are adverse geological phenomenon's that are capable of causing widespread damage or loss to property, life and the environment, such as earthquakes, volcano eruptions and tsunamis. Climate change can increase the frequency and severity of some geohazards, such as landslides, and soil erosion.

Asmania et al. vs Holcim - decision

Target

Policy instrument

Risk

Impacted group

Just transition

Fossil fuel

Greenhouse gas

Economic sector

Adaptation/resilience

Finance