In accordance with the recommendations of the Global Reporting Initiative (GRI) Standards’ reporting guidelines, we are reporting on ONEOK’s ESG performance from January 2018 through December 2018, unless otherwise noted.



As the sustainability landscape evolves, our goal is to understand the important issues facing our industry by continually assessing the business context and stakeholder impacts. In 2018, ONEOK conducted its first materiality assessment to identify the issues that matter most to our business and stakeholders.

ONEOK’s materiality assessment process follows the recommended practices outlined by the GRI to understand topics that reflect the company’s significant ESG impacts, or those that would substantively influence the assessment and decisions of stakeholders. We reviewed sustainability reporting frameworks, peer company reports, industry association guidance and media sources to identify industry-specific topics of significance. We then identified the materiality of issues based on the following criteria:

  • Frequency that stakeholders raised a topic.
  • Likelihood and ability of a topic to impact our business objectives.
  • How the business’ performance around a topic affects stakeholders.

As part of this process, we led a workshop to validate the materiality findings in an effort to identify topics that are most critical to the success of our business and stakeholder interests. We also periodically review the alignment of the results with ONEOK’s strategic plans.

Current ESG material topics reviewed and/or identified include (in alphabetical order):


  • Air emissions
  • Ecological impact
  • Effluent management
  • Energy management
  • Environmental compliance
  • Greenhouse gas emissions and climate change
  • Producer flaring
  • Product stewardship
  • Remediation and decommissioning
  • Waste management
  • Water supply and compliance


  • Attraction and retention
  • Contractor and supplier management
  • Diversity and inclusion
  • Human capital development
  • Human rights
  • Labor management relations
  • Occupational health and safety
  • Pipeline and process safety
  • Security practices
  • Spills and releases
  • Stakeholder engagement


  • Board leadership and diversity
  • Community investments
  • Comprehensive enterprise risk-management
  • Corporate compliance and ethics
  • Corporate governance
  • Customer policy
  • Investor engagement
  • Political advocacy
  • Public policy
  • Shareholder relations
  • Tax policy