On and after publication of this part in the Federal Register, the
interpretations contained therein shall be in effect and shall remain in
effect until they are modified, rescinded, or withdrawn. Prior opinions,
rulings, and interpretations and prior enforcement
policies which are not inconsistent with the interpretations in this
part or with the Fair Labor Standards Act as amended by the Fair Labor
Standards Amendment of 1966 and which were in effect at the time of such
publication are continued in effect; all other opinions, rulings,
interpretations, and enforcement policies on the subjects discussed in
the interpretations in this part are rescinded and withdrawn.