Should your worker be classified as a 1099 contractor or a W2 employee?
http://www.irs.gov/Help-&-Resources/Tools-&-FAQs/FAQs-for-Individuals/Frequently-Asked-Tax-Questions-&-Answers/Small-Business,-Self-Employed,-Other-Business/Form-1099-MISC-&-Independent-Contractors/Form-1099-MISC-&-Independent-Contractors-1