I got a 1099-misc for a spiff at my job paid by the product supplier now it is having me file as a business?

SPIFF (Special Performance Incentives for Field Force)  payments reported on Form 1099MISC; (1) are not treated as wages, (2) are not subject to federal income tax withholding, social security, Medicare, or federal unemployment tax, and (3) are not considered to be self employment income and, therefore, are not subject to self employment tax. http://www.irs.gov/pub/irs-pdf/p3204.pdf

 In TurboTax, Enter at:

- Federal Taxes tab

 - Wages & Income

  - Explore on My Own

Scroll down to

  -1099-Misc and Other common Income

      - Income From 1099-Misc

 On the  follow up screen,  enter SPIFF in the blank box, then on the next screen,  on the drop down list, check “This was  a Manufacturer's incentive payment”

This will put it on line 21 of form 1040

To enter a SPIFF with a 1099-MISC:

While in your return, type “1099-misc” in the Search box and then select the “Jump to” link. This will take you directly to the section where you can enter your 1099-MISC.

On the  follow-up screen,  enter SPIFF in the blank box, then on the next screen,  on the drop down list, check “This was a Manufacturer's incentive payment”

This will put it on line 21 of form 1040

Please see the screenshot below.

The federal return is corrected with these steps, but my Pa return is asking me to complete a gross compensation worksheet like I am self employed.  How do I complete this form?