Wow, having been in the tax world before having my own small business for 28 years and working part time in a fabric store - this causes the hairs on the back on my neck to stand up! The only way to deduct from the paycheck is after all 'regular' deductions are taken and then it would have to be COMPLETELY separate. If not, your end of the year totals would be all messed up and good luck figuring what applies and how much to your taxes. Also, it could mess up what is recorded to Social Security and to Disability. I would think their bookkeeping company would hate this. And, what is the point? Just give the discount at the POS like most companies.