Section 3(1) of the Act defines oppressive child labor as follows:
``Oppressive child labor'' means a condition of employment under
which (1) any employee under the age of 16 years is employed by an
employer (other than a parent or a person standing in place of a parent
employing his own child or a child in his custody under the age of 16
years in an occupation other than manufacturing or mining or an
occupation found by the Secretary of Labor to be particularly hazardous
for the employment of children between the ages of 16 and 18 years or
detrimental to their health or well-being) in any occupation, or (2) any
employee between the ages of 16 and 18 years is employed by an employer
in any occupation which the Secretary of Labor shall find and by order
declare to be particularly hazardous for the employment of children
between such ages or detrimental to their health or well-being; but
oppressive child labor shall not be deemed to exist by virtue of the
employment in any occupation of any person with respect to whom the
employer shall have on file an unexpired certificate issued and held
pursuant to regulations of the Secretary of Labor certifying that such
person is above the oppressive child labor age. The Secretary of Labor
shall provide by regulation or by order that the employment of employees
between the ages of 14 and 16 years in occupations other than
manufacturing and mining shall not be deemed to constitute oppressive
child labor if and to the extent that the Secretary of Labor determines
that such employment is confined to periods which will not interfere
with their schooling and to conditions which will not interfere with
their health and well-being.