BOSSES close to David Cameron are being challenged today to stop the Tory PM using EU renegotiation to scrap the rights of their staff, writes Luke James.

TUC general secretary Frances O’Grady has penned an open letter to the 19 chief executives on the PM’s Business Advisory Group, calling on them to stop the PM “diluting people’s rights to paid holidays, rest breaks and work-life balance.”

She took the unusual step in light of Mr Cameron’s plans wants to scrap the Working Time Directive and Agency Workers’ Directive.

Ms O’Grady warned the bosses they could see their workers turn against EU membership in the forthcoming referendum.

But Trade Unionists Against the EU spokesman Brian Denny called the directives “pointless.”

“No country has ever been taken to court over the Working Time Directive and companies can opt out of the Agency Workers’ Directive.

“Writing to heads of business has never saved any jobs and neither has this illusion of ‘social Europe.’”