The Triple Bottom Line (TBL or 3BL) is a business and design evaluation framework introduced by John Elkington in 1994. It proposes that organisations should measure success not only by financial profit but also by their social and environmental performance.
The three pillars are commonly referred to as the Three Ps:
- People (social)
- Planet (environmental)
- Profit (economic)
People (Social)
- Fair wages and safe working conditions throughout the supply chain
- Equitable access to products and services
- Community wellbeing and cultural respect
- Health and safety of workers and end users
- Avoidance of child labour and exploitation
Planet (Environmental)
- Minimising carbon emissions, waste, pollution
- Protecting biodiversity and ecosystems
- Sustainable use of natural resources
- Lifecycle impacts of materials and processes
Profit (Economic)
- Financial viability for the business
- Economic benefit to communities (local employment, tax contribution)
- Long-term economic sustainability (not just short-term extraction)
Designers applying TBL ask:
- Does this product provide genuine value to the end user without social harm? (People)
- Does production and use minimise environmental impact? (Planet)
- Is the product financially viable at a fair price? (Profit)
| Design Decision | TBL Analysis |
|---|---|
| Sourcing certified timber | Planet: reduced deforestation; People: supports sustainable forestry workers |
| Using local manufacturers | Profit: supports local economy; People: known labour standards; Planet: reduced transport |
| Designing for longevity | Planet: less waste; Profit: premium pricing; People: better value for consumer |
KEY TAKEAWAY: TBL requires designers and businesses to account for social and environmental performance alongside financial profit. A product that is profitable but harmful socially or environmentally fails the TBL test.
EXAM TIP: Apply TBL by addressing all three pillars with specific examples. Avoid vague statements like ‘it is good for the environment’ — name the specific impact.
VCAA FOCUS: TBL is often linked to ethical design scenarios. Show you understand that the three pillars sometimes create tension, not just harmony.