The Cornell Labor Action Tracker now lists 255 strikes in the USA.
http://striketracker.ilr.cornell.edu
Labor militancy is increasing across the US. Some of the employers involved:
Amazon
Kellogg's
Nabisco
Frito-Lay
John Deere
Volvo Trucks
Frontier Communications
Kaiser Permanente
Catholic Health
Cook County Health
Columbia University
Tacoma Public Schools
Peoria Unified SD
East Baton Rouge Parish Public Schools