I have been employed on renewable annual contracts with the same employer since 2012, with contract dates of 01 Jan to 31 December. I am now told that I was erroneously overpaid an my previous contract on backpayment of a salary increament that I was eligible to receive in March 2018. I am now on a new contrac effective 01 Jan 2019.
Am I liable to pay back the overpayment?