Mr. Hall has been Chief Executive Officer and a director since August 2004. Prior to joining Gartner, he was a senior executive at Automatic Data Processing (ADP), a Fortune 500 global technology and service company, serving most recently as President, Employers Services Major Accounts Division, a provider of human resources and payroll services. Prior to joining ADP in 1998, Mr. Hall spent 16 years at McKinsey & Company, most recently as a Director.
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