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This report highlights the accomplishments, actions and practices that contribute to our sustainability strategy, principles and values.

Environmental

As a global company serving more than 140 countries and markets, we know our operations impact the environment, and we have a role to play in mitigating that impact.

2025 highlights

  1. -55%

    Decreased scope 1 and 2 emissions by approximately 55% from 2019 driven by real estate optimization and purchasing renewable energy

  2. Transitioned to cloud-based data centers with more sustainable practices

  3. Participated in the Global Business Travel Association’s Corporate Advisory Board and are a CDP Supporter

  4. Reassessed WTW’s physical and transition risk and opportunity analysis supported by WTW's Climate Practice and published in our Task Force on Climate-Related Financial Disclosures report

  5. Calculated WTW 2025 Greenhouse Gas (GHG) emissions and further developed a data collection program to support ongoing calculations of GHG emissions in line with the accepted GHG Protocol

People and community

Our people and community strategy includes programs that:

  • Foster a culture of inclusion and belonging
  • Provide our colleagues with the benefits, resources and support they need to be authentic, curious and bold
  • Help colleagues achieve their career aspirations at WTW
  • Recognize the impact of caring for and giving back to our global communities through charitable giving

2025 highlights

  1. +405K

    Colleagues completed over 405,000 hours of training through WTW’s learning and leadership development platforms

  2. Launched a new Belonging Guide to help articulate our view of belonging, outlining the impact a strong sense of belonging can have on our colleague experience and providing practical tips and actions that can help bring it to life

  3. +2.3M

    Gave more than $2.3 million in charitable donations in 2025 through our business and office giving and our charitable matches

Governance

Our governance strategy and company values emphasize the management of all relationships with fairness, decency and good citizenship.

2025 highlights

  1. Continued to require all colleagues globally to complete training on the WTW Code of Conduct

  2. Implemented programs to continue to support our operational resilience, including business continuity

Thought leadership

Through the work we do with clients, our thought leadership and partnerships, WTW is involved in and committed to confronting client business challenges in areas associated with people, risk and capital.

Climate Practice

Climate risk represents a significant and growing concern for public and private companies, third-sector organizations, and national and local governments globally.

WTW’s Climate Practice is the focal point for much of our climate expertise and capabilities. It brings together the company’s core risk and analytics strengths, combined with extensive climate expertise, to help clients identify, quantify and manage climate-related risks.

Thinking Ahead Institute

The Thinking Ahead Institute (the Institute) is a global not-for-profit research and innovation network dedicated to helping investors navigate the future.

Bringing together leading asset owners, asset managers, wealth providers and strategic partners, the Institute drives innovation through collaborative research and practical solutions.

Partnership with Climate Governance Initiative and other board director forums

In 2025, we continued our partnerships with multiple board director forums to deliver training on climate governance and the board’s role in the climate transition, including Climate Governance Initiative, Chapter Zero, ecoDa, Non-Executive Directors’ Association, National Association for Corporate Directors, Directors and Boards, Singapore Institute of Directors, Institute of Corporate Directors Malaysia and others.

WTW Research Network

The Willis Research Network is one of the world’s longest-standing and most influential collaborations between academia and the insurance industry.

The WTW Research Network comprises of eight research hubs that produce a wide spectrum of academic and business-focused outputs.

By working together and challenging one another to excel, we ignite possibilities and create ideas that meet the needs of our clients, colleagues, investors, partners and communities — informed by the global view and the local understanding of our colleagues around the world. We are proud of the work we have done to help WTW and our clients transform tomorrows and will continue these efforts.