QUESTION

Can we have an unpaid summer intern?

SHORT ANSWER
If your company is deriving economic benefit from the intern’s work, it is probably not a proper unpaid internship under the Fair Labor Standards Act.
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It depends on what you plan to have your intern doing for your company.  If your company is deriving economic benefit from the intern’s work, it is probably not a proper unpaid internship under the Fair Labor Standards Act. If the intern has an observation-heavy, education-fulfilling role, similar to what would be found in an educational setting, the internship could potentially qualify to be unpaid.