Well, jainen, I've never had any clients with employees with any employment tax or other credits before - just lucky, I guess. Perhaps that's why I had to ask the question on this one, lack of previous exposure to the situation.
My inclination matches that of Karen Lee, to offset the insurance premium since the credit is to pay for the insurance premium but others in the group felt fairly strongly that, since it was on the payroll tax form and a reduction in the tax remitted, it should be a reduction in payroll tax.
I'm too easily swayed in either direction because of uncertainty and lack of experience in this area. Thanks for the input, folks. I guess very few others on the board have a question about it.