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The City of Portland, Oregon

Sustainability at Work

Providing free tools and expertise to achieve your goals

Phone: 503-823-7037


Mammoth HR

Mammoth HRAbout

Mammoth is the national leader in the field of collaborative HR. The company leverages technology, HR expertise, and relationships across the HR ecosystem to help clients build their HR capabilities and drive long-term organizational success. By promoting sustainability, reducing waste, and providing employees tools to reduce their own carbon footprint, Mammoth is committed to caring for the environment.

Gold certified

  • Good Works group is supported by management in implementing sustainability efforts.
  • Company has a GO Box business account for employees to use.
  • CEO and other employees serve in community leadership roles.
  • Sheltered, secure bike parking is available on site, and showers and lockers are provided for bike and walk commuters.
  • Pre-tax transit pass program offered to all employees.

Mammoth staff

Mammoth staff


100 SW Market St., Portland, OR 97201