(1) Except as provided in Subsection (2), this chapter and Chapter 3, Utah Occupational Disease Act, apply to employers and their employees engaged in:
(a) intrastate commerce;
(b) interstate commerce; and
(c) foreign commerce.
(2) If a rule of liability or method of compensation is established by the Congress of the United States as to interstate or foreign commerce, this chapter and Chapter 3, Utah Occupational Disease Act, apply only to the extent that:
(a) this chapter and Chapter 3, Utah Occupational Disease Act, have a mutual connection with intrastate work; and
(b) the connection to intrastate work is clearly separable and distinguishable from interstate or foreign commerce.