The term "exempt work" means all work described in §§ 541.100 , 541.101 , 541.200 , 541.300 , 541.301 , 541.302 , 541.303 , 541.304 , 541.400 and 541.500 , and the activities directly and closely related to such work. All other work is considered "nonexempt."
29 C.F.R. §541.702