Altec Industries, Inc. (Signed November 22, 2005; renewed December 18, 2007; renewed June 14, 2012; renewed December 1, 2015).
American Chemistry Council. (Signed September 13, 2017).
American Industrial Hygiene Association. (Signed October 10, 2002; renewed April 23, 2004; renewed July 6, 2006; renewed October 21, 2008; renewed May 21, 2013; renewed November 8, 2018).
American Pipeline Contractors Association. (Signed January 25, 2007; renewed February 25, 2009; renewed January 30, 2012; renewed October 15, 2015).
American Red Cross. (Signed May 19, 2005; renewed August 6, 2008; renewed November 9, 2015).
American Society of Safety Professionals. (formerly American Society of Safety Engineers). (Signed December 4, 2002; renewed June 8, 2004; renewed June 12, 2006; renewed June 10, 2008; renewed March 16, 2012; renewed June 9, 2015).
American Staffing Association. (Signed May 21, 2014; renewed October 21, 2016).

CareerSafe: The National Youth Initiative (CareerSafe). (Signed June 26, 2018).
Coordinating Committee for Automotive Repair. (Signed February 17, 2004; renewed September 12, 2006; renewed August 4, 2008; renewed May 12, 2015).
CPWR- The Center for Construction Research and Training. (Signed January 11, 2017; renewed July 17, 2019.)
Crane, Hoist and Monorail. (Signed October 5, 2005; renewed October 29, 2007; renewed November 21, 2012; renewed February 2, 2016).

Global Cold Chain Alliance. (Signed July 30, 2010; renewed July 28, 2014; renewed July 31, 2019.)

Independent Electrical Contractors, Inc. (Signed August 30, 2002; renewed April 5, 2004; renewed October 30, 2006; renewed December 8, 2008; renewed December 7, 2015).
Industrial Truck Association. (Signed January 15, 2004; renewed April 24, 2006; renewed April 9, 2008; renewed January 11, 2016).
Institute of Scrap Recycling Industries, Inc. (Signed October 19, 2015).
International Safety Equipment Association (ISEA) (Signed June 21, 2018).
International Window Cleaning Association. (Signed June 10, 2010; renewed October 31, 2012; renewed February 14, 2018).

The Joint Commission and Joint Commission Resources (Formerly the Joint Commission on Accreditation of Healthcare Organizations and Joint Commission Resources, Inc.). (Signed July 27, 2004; renewed November 8, 2006; renewed January 14, 2009; renewed August 21, 2013; renewed February 12, 2019).

Lamar Outdoor Advertising. (Signed September 19, 2007; renewed October 12, 2012; renewed December 1, 2015).

National Association of Landscape Professionals (formerly Professional Landcare Network). (Signed October 2, 2008; renewed November 26, 2013).
National Association of Women in Construction. (Signed August 21, 2013; renewed December 13, 2017).
National Grain and Feed Association. (Signed September 13, 2017).
National Safety Council. (Signed September 9, 2003; renewed September 21, 2005; renewed October 15, 2007; renewed August 29, 2012; renewed September 16, 2014).
National Service, Transmission, Exploration & Production Safety (STEPS) Network and National Institute for Occupational Safety and Health (NIOSH). (Signed December 2, 2014; renewed November 29, 2016).
National Waste & Recycling Association (NWRA) and Solid Waste Association of North America (SWANA). (Signed September 27, 2019).

Scaffold & Access Industry Association (Formerly the Scaffold Industry Association, Inc.). (Signed February 25, 2008; renewed June 29, 2011; renewed December 18, 2013).
Sealant Waterproofing and Restoration Institute. (Signed February 20, 2003; renewed July 21, 2005; renewed July 11, 2007; renewed July 6, 2009; renewed June 24, 2011; renewed March 20, 2014).
Shipbuilding Group. (Signed March 29, 2016).
Society for Chemical Hazard Communication. (Signed October 22, 2003; renewed December 5, 2005; renewed March 24, 2008; renewed March 1, 2012; renewed April 13, 2015).
Society for Maintenance and Reliability Professionals (SMRP). (Signed October 11, 2018).