The section 13(a)(4) exemption (see Sec. 779.301) exempts any
employee employed by a retail establishment which meets the requirements
for exemption under section 13(a)(2), even though the establishment
makes or processes on its own premises the goods that it sells,
provided, that more than 85 percent of such establishment's annual
dollar volume of sales of the goods so made or processed is made within
the State in which the establishment is located, and other prescribed
tests are met.