CPSP: Sustainability and Ethics

This domain tests how environmental, social and governance requirements are embedded in sourcing decisions, and how ethical judgment is applied to gifts, conflicts of interest and supplier conduct. Questions frequently test emissions accounting boundaries and due diligence obligations.

Core frameworks

• Triple bottom line: economic, environmental and social outcomes evaluated together.
• ISO 20400 provides guidance on integrating sustainability into procurement policy and process.
• Supplier codes of conduct need audit, remediation and consequence; a code without enforcement is a statement of intent.
• GHG Protocol scopes: Scope 1 is direct combustion and process emissions; Scope 2 is purchased electricity, heat or steam; Scope 3 covers fifteen value chain categories, with purchased goods and services as category 1.
• Due diligence regimes include OECD guidance, conflict minerals (tin, tantalum, tungsten, gold), forced labour import prohibitions, modern slavery reporting, and corporate sustainability due diligence requirements.
• Circularity levers: design for disassembly, take-back schemes, recycled content, and repairability.

Worked example

A buyer purchases 50,000 tonnes of steel at 2.5 tonnes CO2e per tonne, giving 125,000 tonnes CO2e.

• This is Scope 3 category 1 in the buyer's inventory.
• The same emissions appear as Scope 1 in the steel producer's inventory.
• Overlap across different companies' inventories is expected in Scope 3 accounting; double counting within a single inventory is not acceptable.
• Choosing cradle-to-gate rather than cradle-to-grave changes the figure, so the boundary must be stated alongside the number. The reasoning: the classification and boundary drive the reported number far more than the arithmetic does.

Ethics in practice

• Declare conflicts of interest; apply gifts and hospitality thresholds; comply with anti-bribery law such as the FCPA and UK Bribery Act; protect confidential bid information.
• Greenwashing appears as unsubstantiated claims, selective metrics, or no third-party verification.

Traps

• Reporting purchased goods emissions as Scope 2.
• Treating a passed supplier audit as proof of ongoing performance.
• Adopting a code of conduct with no audit or remediation mechanism.
• Assuming the lower-carbon option always costs more; model total cost of ownership first.
• Chasing carbon metrics while ignoring forced labour and safety risk in the same supply base.