Ask your employer(s) they will for sure know how many hours you worked given they paid you for those hours. It is your responsibility to keep track of your hours to ensure you keep within the rules, although possibly just a week over unlikely to be an issue no way to predict.how can I know how many hours I am working, and if I have exceeded the limit once or twice, would it be in tax return statements. I might have worked full time while I was on my co op but tht was on my study permit . is it ok if have done it for only one week and never before or after. is there anyway I can check my record of working hours. pls help , I am really worried