29 C.F.R. § 780.9

The interpretations contained in the several subparts of this part 780 consider separately a number of exemptions which affect employees who perform activities in or connected with agriculture and its products. These exemptions deal with related subject matter and varying degrees of relationships between them were the subject of consideration in Congress before their enactment. Together they constitute an expression in some detail of existing Federal policy on the lines to be drawn in the industries connected with agriculture and agricultural products between those employees to whom the pay provisions of the Act are to be applied and those whose exclusion in whole or in part from the Act's requirements has been deemed justified. The courts have indicated that these exemptions, because of their relationship to one another, should be construed together insofar as possible so that they form a consistent whole. Consideration of the language and history of a related exemption or exemptions is helpful in ascertaining the intended scope and application of an exemption whose effect might otherwise not be clear (Addison v. Holly Hill, 322 U.S. 607; Maneja v. Waialua, 349 U.S. 254; Bowie v. Gonzales (C.A. 1), 117 F. 2d 11). In the interpretations of the several exemptions discussed in the various subparts of this part 780, effect has been given to these principles and each exemption has been considered in its relation to others in the group as well as to the combined effect of the group as a whole.