A retired Waikato couple who worked for Hamilton's hospital for over six decades between them are facing a lengthy wait for tens of thousands of dollars of holiday pay. Errors in calculating holiday pay date back over 15 years and will cost Health NZ about $1.8 billion in payouts. Most current employees have been repaid, but Health NZ has only recently started paying former staff, and many won't see a cent for another year. It says the process is a complex, requiring constant checks and accessing different payroll systems. Jimmy Ellingham reports.