About Korn Ferry Hay Group, Inc.

Personnel Decisions International (PDI) helps businesses make some very personal decisions. Doing business as PDI Ninth House, the firm offers human resources consulting. PDI's consultants, including industrial and organizational psychologists, help clients determine, develop, and measure successful leadership and organizational performance. PDI Ninth House provides services related to pre-employment screening, leadership assessment and selection, leadership development, coaching programs, and succession planning. The company traces its roots back to 1967 when it was founded by industrial/organizational psychology pioneer and author Marvin Dunnette.

Geographic Reach

The firm offers human resources consulting from nearly 40 offices spanning six continents.

Sales and Marketing

PDI Ninth House's clients include 75% of the Forbes Global 100 and 80% of the Fortune 100 firms.


The firm attributes growth in its client base to the synergies involved in its merger with Ninth House.

Mergers and Acquisitions

PDI combined its operations with Ninth House, a provider of human resources consulting, training, and technical services, in late 2008.

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Korn Ferry Hay Group, Inc.

33 S 6th St Ste 4900
Minneapolis, MN 55402-3716
Phone: 1 (612) 339-0927


  • Employer Type: Private
  • Senior Vice President Executive Services: Val Arnold
  • Managing Director Professional Services: Susan Brock
  • Senior Vice President: Keith Halperin

Major Office Locations

  • Minneapolis, MN

Other Locations

  • San Francisco, CA
  • Waltham, MA
  • New York, NY
  • Dallas, TX
  • Arlington, VA

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