Never had a late payment, everything one hundred percent legit. Have had them send me a bill that I didn't owe and have to spend four hours on the phone to have it reversed. Have had them not send out remittance forms on time, then have to scramble to have one faxed at the last minute to avoid penalty. When asked why they were not mailed, they said it was a glitch in the system. Could probably take a chance on paying it late, but might get a penalty. You never want to be late with a wsib payment. If you have never had any issues with dealing with the govt I say you are lucky.