My employer says I am not entitled to redundancy payment because I have waived my right. Is this correct?

If you are entitled in law to a redundancy payment (i.e. you have worked for your employer for two years or more and are being made redundant), you cannot be made to give up or 'sign away' that right, no matter what your contract says.

Fixed term workers who have been employed under a contract for two or more years are now protected by the Fixed Term Worker (Prevention of Less Favourable Treatment) Regulations 2002 and cannot be made to give up their right to a redundancy payment.