In considering whether a worker is an employee for the purposes of the FSLA, questions of fact are reviewed for clear error, while questions of law are reviewed de novo; at summary judgment, though, since the court makes no findings of fact, the question of genuine issue of material fact is reviewed de novo.
Here, sufficient question for trial.
http://media.ca7.uscourts.gov/cgi-bin/rssExec.pl?Submit=Display&Path=Y2018/D06-20/C:17-2685:J:Bauer:aut:T:fnOp:N:2173923: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.