Unionized workers have staged strikes at around 20 XPO facilities in France, and the International Brotherhood of Teamsters are attempting to organize XPO terminals in the U.S. XPO has also had to pay out millions of dollars to settle claims by port truckers who said they were improperly classified as contractors.

XPO was until last year mainly a broker and logistics provider, but is now one of the largest U.S. trucking companies following its acquisition of Con-way Inc. in October. XPO also bought French trucking firm Norbert Dentressangle SA in June.
Teamsters spokesman Galen Munroe said Wednesday that XPO has become a larger focus for the union as the company has expanded. “We had engaged XPO at the ports first, and then XPO became a larger focus once they bought Con-way,” he said.
Union Targets XPO Logistics - WSJ