My question is in the title. My contract, secondary teacher in a voluntary secondary school, requires three months notice to resign or retire. Therefore teachers retiring at the end of the school year on 31st August would have given notice by 31st May at the latest. My question is, what happens if, for whatever reason, you're not on time with your notice and likewise with your application to retire? Suppose you only give 6 or 8 weeks notice? While I understand that this may lead to a delay in paying the pension and lump sum, is the employer, in my case the DES, still legally obliged to date and pay pension from the date of retirement, even if the payment is delayed? Or is there a financial penalty for late notice? Thanks in advance to anyone who can answer this.