I was working as a contractor for the first 10 months of 2014 and was later converted into a full time employee. My company sent me two T4 slips, one for the portion I worked as contractor and one for the full time portion. When I was a contractor, the tax portion, CPP and EI were deducted until I maxed. Therefore my second T4 slip had zero contribution for CPP and EI. I filled two T4 slips, but Ufile keeps telling it will ignore the zero contribution of CPP and EI in my second T4 because I didn't mention i'm exempt. Any advice what can I do ? shall i leave EI and CPP blank instead of zero or do you think I should combine both T4 slips into one since it belongs to the same company ?