Australia's peak union body has used a federal Senate inquiry to argue giving landlords tax discounts is hurting everyday workers.The Australian Council of Trade Unions (ACTU) is calling for an overhaul of capital gains tax concessions on property to "help drive a fairer housing system".ACTU President Michele O'Neil told a Senate inquiry into the tax break the current tax discount "privileges professional landlords and hurts working Australians who are being priced out of home ownership".READ MORE: Trump tariff hikes to