Reportedly, agreements amongst each other - in part bolstered by conversations in Job's books, indicate that companies had an "informal agreement" to prevent employees from leaving one company and moving to another..
http://www.engadget.com/2012/04/20/antitrust-suit-carries-on-against-intel-apple-google-and-other/
Part of this goes back to documents and work uncovered in the Jobs book and before, in which executives from companies made informal agreements to not go after other employees.
http://www.theverge.com/2012/1/27/2753701/no-poach-scandal-unredacted-steve-jobs-eric-schmidt-paul-otellini
Numerous companies are named in this plan to keep employees locked into one company or to prevent bidding wars for employees, fixing employee costs
http://www.engadget.com/2012/04/20/antitrust-suit-carries-on-against-intel-apple-google-and-other/
Part of this goes back to documents and work uncovered in the Jobs book and before, in which executives from companies made informal agreements to not go after other employees.
http://www.theverge.com/2012/1/27/2753701/no-poach-scandal-unredacted-steve-jobs-eric-schmidt-paul-otellini
Google's director of staffing Arnnon Geshuri[I said:[/I]revealed the existence of a formal Do Not Call list in an email to Eric Schmidt, such as the ones that the Justice Department claimed in the original 2010 settlement.]
Numerous companies are named in this plan to keep employees locked into one company or to prevent bidding wars for employees, fixing employee costs