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<p>Not necessarily. In the technical parts of computer companies, summer interns (who are paid), new graduates, and other new hires are productive in a lot less time than three months.</p>
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<p>Yes, and that may also be an indicator of what the entry level pay for certain types of jobs would be in the absence of minimum wage laws (a good hint that perhaps that career direction may not be too promising).</p>
<p>It also means that such career directions where unpaid internships are the norm at the entry level are only accessible to those from wealthy families, since those from non-wealthy families need to find paid jobs instead.</p>