The exemption in section 13(a)(13) of the Act need not be considered
unless the employee is ``engaged in commerce or the production of goods
for commerce'' or is employed in an ``enterprise engaged in commerce or
in the production of goods for commerce,'' as those words are defined in
the Act, so as to come within the general scope of sections 6 and 7. The
principles of coverage are discussed in part 776 of this chapter and the
discussion will not be repeated in this part. Neither does this part
discuss the exemptions provided in section 13(a)(6) and 13(b)(12), or
section 3(f) which includes in the definition of agriculture forestry or
lumbering operations performed by a farmer or on a farm as an incident
to or in conjunction with certain farming operations. (See part 780 of
this chapter.)