Labour's plan to release thousands of killers, thugs and paedophiles early was thrown into chaos today after probation officers voted for industrial action. The National Association of Probation Officers (NAPO) union said nine in ten of the thousands of workers it represents voted in favour. The poll was only ‘indicative’, meaning another official ballot must be held for any industrial action to be legal. And there are concerns many of those released will reoffend if probation officers are forced to cut corners. Asked if serious offenders were more likely to re-offend because of planned industrial action, he said: ‘They could do.