paris france hardline cgt union wednesday say would join far-left party jean-luc melenchon sept. 23 protest labor reform sign opposition president emmanuel macron plan divide union instead march next week leader philippe martinez tell paris match magazine france second-largest union cgt melenchon france unbowed party main opponents plan include cap payouts dismissals adjudge unfair great freedom employers hire fire large third-largest union cfdt fo say would take streets cgt independent political party martinez say hold rare meet melenchon wednesday opinion poll show voters like reform overall back individual measure include direct negotiations boss staff small firm many conservative republicans party big opposition bloc parliament back reform cgt mobilize tens thousands activists absence could impact turnout melenchon rally union lose position march france big france unbowed 17 lawmakers little block reform 577-strong parliament melenchon popular attract 19.6 percent vote first round presidential election april rally key test party capacity mobilize voters macron forty-five percent voters say melenchon party macron strong opponent twice figure republicans far-right national front ifop-fiducial poll show tuesday french union say join far-left protest macron reform