WNS, a global business process management (BPM) provides outsourced solutions across finance, healthcare, insurance, and other industries. Alongside its growth in scale and digital capabilities, WNS has expanded its sustainability reporting.
Its FY 2024–25 sustainability report outlines science-based climate targets and shows progress on renewable energy. But the disclosures also reveal a pressing challenge: the majority of WNS’s carbon footprint now comes not from its facilities or operations, but from employee commuting and home-working.
WNS reported market-based emissions of about 144,600 metric tons of CO₂ equivalent (tCO₂e) in FY 2024–25. Of that total, Scopes 1 and 2 (direct operations and purchased electricity) accounted for just over 21,900 tCO₂e. Scope 3, however, reached 121,667 tCO₂e — roughly 84% of the company’s footprint.
Breaking Scope 3 down further reveals the heart of the challenge:
Together, these categories overshadow emissions from WNS’s data centers, offices, and fleets. In fact, commuting and home-working alone generated more carbon than all of Scope 1 and Scope 2 combined.
WNS has set near- and long-term climate targets validated by the Science Based Targets initiative (SBTi). By FY2030, the company aims to cut absolute Scopes 1 and 2 emissions by 42% compared with FY2023 levels and reduce Scope 3 intensity by 25% per full-time employee. Its long-term target is net-zero across the value chain by FY2050, requiring a 95% cut in Scopes 1 and 2 and a 90% cut in Scope 3.
Validation by SBTi gives WNS’s roadmap credibility, particularly as regulators and investors increasingly scrutinize the difference between “net-zero pledges” and science-aligned decarbonization. But while Scope 1 and 2 reductions are clear, Scope 3 targets framed only on an intensity basis leave questions about how absolute emissions will be reduced as the workforce grows.
The report’s unusually detailed disclosure of commuting and home-working emissions highlights a category many companies overlook. The GHG Protocol recently updated methodologies to standardize how remote-work emissions should be calculated, considering electricity use for laptops and monitors, home heating and cooling, and regional power-grid carbon intensity.
For a workforce of more than 64,000 spread across 13 countries, this footprint is material. And it is difficult to cut without either restructuring employee work patterns or investing in incentives and infrastructure.
Options include:
Few companies disclose commuting and home-working data at this level of detail, making WNS’s reporting notable. But it also means the company will be under pressure to demonstrate concrete reductions in these categories over time.
The timing of WNS’s disclosures comes as regulators expand requirements for Scope 3 transparency.
For global firms like WNS, which serves clients in Europe and North America, these rules raise the bar on both accuracy and assurance of Scope 3 emissions. The company’s limited assurance by DNV covers part of the current report, but deeper verification may soon be required.
On the positive side, WNS reports that “over 49%” of its electricity now comes from renewable sources, significantly lowering its market-based Scope 2 emissions compared with location-based figures. This shift reflects both procurement of renewable energy certificates (RECs) and investments in green data centers and optimized cloud infrastructure.
These actions are consistent with sector-wide moves toward decarbonized IT and facilities, and they position WNS well on operational emissions. The company will likely need to expand renewable sourcing through power purchase agreements (PPAs) to sustain and scale progress.
The sustainability report highlights broader ESG actions, including governance, diversity, and workforce investments:
These disclosures align with growing stakeholder expectations for transparency not only on environmental issues but also on social and governance performance.
WNS’s sustainability report makes clear that the company is serious about its commitments. Validated targets, nearly half-renewable electricity, and governance transparency all signal credibility. But the challenge ahead lies in Scope 3 — specifically, how a service-based company can materially reduce commuting and home-working emissions while continuing to grow.
For corporate sustainability leaders, WNS’s case underscores a pivotal shift: Scope 3 is now central, not secondary. It represents the bulk of emissions and is becoming a regulatory requirement. The companies that lead will be those advancing from disclosure to demonstrable reductions in categories once seen as untouchable.
