You might start by following the &quot;Independent contractor vs employee&quot; guidelines.  Of, say, California and the IRS.<p><a href="http:&#x2F;&#x2F;www.dir.ca.gov&#x2F;dlse&#x2F;faq_independentcontractor.htm" rel="nofollow">http:&#x2F;&#x2F;www.dir.ca.gov&#x2F;dlse&#x2F;faq_independentcontractor.htm</a><p><a href="http:&#x2F;&#x2F;www.irs.gov&#x2F;Businesses&#x2F;Small-Businesses-&amp;-Self-Employed&#x2F;Independent-Contractor-Self-Employed-or-Employee" rel="nofollow">http:&#x2F;&#x2F;www.irs.gov&#x2F;Businesses&#x2F;Small-Businesses-&amp;-Self-Employ...</a>