In 2004, the Occupational Safety and Health Administration (OSHA) entered into the Electrical Transmission & Distribution (ET&D) Strategic Partnership agreement with six electrical contractors: Asplundh Tree Expert Co., Henkels & McCoy, MDU Construction Services Group, MYR Group, Pike Electric and Quanta Services; one union: the International Brotherhood of Electrical Workers (IBEW); and two trade associations: the National Electrical Contractors Association (NECA) and Edison Electric Institute (EEI). The primary objective of this partnership is to improve worker safety in the high-voltage electric line construction industry. Members of the partnership have renewed their agreements with OSHA and expanded in 2006, 2008, 2010 and, most recently, in 2011 with the addition of MasTec and Power Line Services to the list of membership partners. Today the ET&D Strategic Partnership is one of only a few national partnerships between employers and the federal job safety agency, and covers an estimated 80 percent of total workers in the line construction industry.