LABOURERS–LOCAL 506, MAY 1, 2013 LABOURERS–LOCAL 506, MAY 1, 2013 March 9, 2013 Katrina D LABOURERS–LOCAL 506, MAY 1, 2013 LABOURERS–LOCAL 506, MAY 1, 2013 LABOURERS–LOCAL 506, MAY 1, 2013 Labourers` Local 506 Wage Schedules Effective May 1st 2013 for Board Areas 8 and 18. Download Effective May 1, 2013. March 9, 2013 Categories:Implementation Rates