Yes.  The FLSA does not limit the types of work employees age 18 and older may be required to perform.  However, there are restrictions on what work employees under the age of 18 can do.  This is true whether or not the work asked of the employee is listed in the employee’s job description.
As part of your pre-influenza, pandemic, or other public health emergency planning, you may want to consult your human resource specialists if you expect to assign employees work outside of their job description during a pandemic or other public health emergency.  You may also wish to consult bargaining unit representatives if you have a union contract.
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