Proposals to end the practice of national pay bargaining have prompted fears that some workers will find themselves on the wrong side of a North-South divide.

BBC: Chancellor defends localised public sector pay deals

On the call, Mr. Einhorn also criticized the broader practice of tech companies building large cash reserves to protect themselves against unexpected downturns, or to fund possible acquisitions.

WSJ: Judge Grants David Einhorn's Bid To Block Apple Proxy Vote