- CompensationStandards.com
- Economic Research Institute, Salary Surveys
- Equilar
- Frederick W. Cook & Co., Inc., Publications
- National Association of Stock Plan Professionals
- Pearl Meyer & Partners, Research Reports
- Remunerations Consultants Group
- Salary.com, CompAnalyst Executive
- Stephen Hall & Partners, Publications
- World At Work
Updated on April 18th, 2014.