(formerly) an official appointed by a trade union to go from place to place to investigate working conditions, to ascertain whether union contracts were being fulfilled, and, sometimes, to negotiate contracts between employers and the union.
Origin of walking delegate
An Americanism dating back to 1890–95
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
(in the US) an agent appointed by a trade union to visit branches, check whether agreements are observed, and negotiate with employers
(in New Zealand) a trade union official who visits dispersed working areas on a wharf
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012