SRL for [battled]: Its 6,500 workers , who had [battled] Tiger 's management for years over givebacks , were union members until the day of the merger , when most of their unions were automatically decertified .
R-ARG-0: who | ARG-0: Its 6,500 workers | ARG-1: Tiger 's management | ARG-M-TMP: for years | ARG-2: over givebacks