The Sustainability Hierarchy: Why the Economy Depends on Society, and Society Depends on Nature

For most of the past three decades, sustainability has been drawn as three equal, overlapping circles: environment, society, and economy, balanced side by side and traded off against one another. It is a comfortable picture, because it implies that a loss in one can be offset by a gain in another. It is also, increasingly, the wrong picture.

A more accurate model stacks the three rather than lining them up. The environment is the foundation, the natural systems that make all human activity possible. Society rests on that foundation, because thriving communities depend on a healthy environment. And the economy rests on society, because long-term prosperity relies on strong communities and a stable planet. This is the sustainability hierarchy, and for professionals it is more than a diagram. It reorders priorities, dissolves a false trade-off, and is backed by some of the most robust science in the field.

From Three Pillars to Three Layers

The shift from equal pillars to nested layers is the difference between what sustainability scientists call weak and strong sustainability. The pillar model treats natural, social, and financial capital as broadly substitutable, as if more of one can compensate for less of another. The nested model says they cannot, because the economy operates inside society, and society operates inside the biosphere. You cannot trade away the foundation you are standing on.

This framing was crystallized in 2016 when researchers at the Stockholm Resilience Centre, led by Johan Rockström and Pavan Sukhdev, introduced the SDG "wedding cake." Rather than 17 separate goals, it presented the Sustainable Development Goals as three stacked layers, with the biosphere at the base, society in the middle, and the economy at the top. The point was simple and radical: economies and societies should be seen as embedded parts of the biosphere, not separate sectors competing for attention.

The economics back this up. World Economic Forum research found that roughly $44 trillion of economic value, more than half of global GDP, is moderately or highly dependent on nature, a figure PwC later raised to about $58 trillion. In other words, the economy is not a peer of the environment. It is a tenant.

Layer One: The Environmental Foundation

At the base sits everything that makes life and commerce possible: climate stability, biodiversity, water resources, ecosystem health, resource conservation, and pollution management. This is the load-bearing layer. Degrade it, and every layer above becomes less stable.

The science here is precise. The planetary boundaries framework, first proposed in 2009, identifies nine Earth-system processes that together define a safe operating space for humanity, the conditions under which civilization developed. A major 2023 assessment concluded that six of those nine boundaries had already been transgressed, including climate change, biosphere integrity, land-use change, and freshwater. The 2025 Planetary Health Check went further, identifying ocean acidification as the seventh boundary to be breached. The foundation, in short, is under visible strain, and the framework's central warning is that these systems cannot be managed in isolation, because they interact.

For a business, this layer is not philanthropy. It is the source of raw materials, water, stable growing seasons, predictable weather, and the ecosystem services that supply chains quietly depend on.

Layer Two: Social Wellbeing

Resting on the environmental foundation is the social layer: health and safety, education, equity and inclusion, human rights, community resilience, and quality of life. The hierarchy's logic is that these depend on the layer beneath them. When climate shocks, water stress, or pollution hit, they show up first as human problems, in health, displacement, food insecurity, and conflict, before they ever reach a balance sheet.

This is the same insight captured by doughnut economics, developed by economist Kate Raworth. Her model pairs an ecological ceiling (the planetary boundaries) with a social foundation, the floor of essentials below which no one should fall: food, water, health, education, decent work, equity, and a political voice. The goal is the safe and just space between the two. A 2025 analysis published in Nature applied this lens over two decades and found a sobering pattern: global GDP more than doubled, yet ecological overshoot accelerated while human deprivation fell only modestly, and the wealthiest 20% of nations, home to 15% of the population, drove more than 40% of the overshoot. Growth, it turns out, has not automatically lifted the social floor or protected the ecological ceiling.

Society, then, is the bridge. A healthy environment enables stable, capable communities, and those communities are what make a functioning economy possible.

Layer Three: Economic Prosperity

At the top sits the layer most boardrooms start with: innovation, employment, infrastructure, responsible production, sustainable investment, and business growth. The hierarchy does not diminish this layer. It reframes it. Economic prosperity is the output of healthy systems below it, not the input that creates them.

That reframing matters because it explains why prosperity built on a degraded foundation is fragile. If half of global GDP depends on nature, then nature loss is not an external concern; it is a direct threat to revenue, assets, and supply chains. The doughnut data make the same point from the opposite direction: two decades of rapid GDP growth that widened ecological overshoot bought far less durable wellbeing than the headline numbers suggest. An economy that consumes its own foundation is not growing sustainably. It is borrowing against a balance sheet that will eventually be called in.

Why the Order Matters for Professionals

The practical power of the hierarchy is that it sequences priorities instead of siloing them. A few implications follow:

• It dissolves the profit-versus-planet trade-off. You cannot offset the loss of a load-bearing layer with gains in the one above it, so protecting the foundation is not a cost to growth but a precondition for it.
• It explains why nature and climate risk are financial risk. This is the same logic now driving frameworks such as the TNFD and double-materiality reporting: dependencies on the foundation are material to the top layer.
• It tells you where to start. Resilience is built from the bottom up, so strategies that secure environmental and social stability protect economic value more reliably than the reverse.
• It guides capital. Aligning investment with the safe and just space, rather than with short-term output alone, is how the hierarchy translates into portfolio and operating decisions.

The encouraging part is that the model is ultimately constructive. When the layers are respected in order, they reinforce one another: a stable environment supports thriving societies, and thriving societies support durable economies. The sustainability hierarchy is not an argument against prosperity. It is a map of what prosperity actually rests on, and a reminder that the surest way to protect the top of the structure is to invest in its foundation.

Sources

Stockholm Resilience Centre (the SDG wedding cake; planetary boundaries framework), Johan Rockström and Pavan Sukhdev (wedding cake model, 2016), Richardson et al., Science Advances (Earth beyond six of nine planetary boundaries, 2023), the Planetary Health Check (Potsdam Institute for Climate Impact Research, 2024 and 2025 updates), Kate Raworth (Doughnut Economics) and the 2025 Nature analysis of social and planetary boundaries, the World Economic Forum and PwC (nature-dependency of global GDP), the UN Sustainable Development Goals, and the Taskforce on Nature-related Financial Disclosures (TNFD).

This article is intended for general professional information and does not constitute legal, financial, or investment advice.