Preemption, Class Actions
Federal motor carrier act does not expressly preempt state wage law, as the purposes of the state law aren't relevant to the purposes of the Federal act.
State statute seeming to require individual assessment of plantiff's future employment doesn't categorically bar a finding of predominance for class certification.
http://media.ca7.uscourts.gov/cgi-bin/rssExec.pl?Submit=Display&Path=Y2016/D01-19/C:15-1110:J:Kanne:aut:T:fnOp:N:1689158:S:0
Since 2011. An occasional commonplacing of the U.S. Circuit Courts of Appeal.
Neither an authoritative statement of the law nor legal advice. Quick work.