Some important changes to holiday pay arrangements came into effect from 6 April 2020. This has seen the reference period for calculating holiday pay increase from 12 to 52 weeks. This change affects workers with no fixed or regular hours. It means that their holiday pay will now be based on the average pay they received over the previous 52 (not 12) weeks. The 52 week reference period will continue to function in the same way as the previous 12 week period.