I am looking for some guidance on how to calculate holiday pay for casual/Bank staff.

The BERR website gives two different methods in two different parts of the site.

1. annual leave should accrue at 10.2% of hours worked (i.e. for every 10 hours worked you would accrue 61 minutes of annual leave)

2. annual leave should be calculated by taking the previous 12 weeks hours and averaging the hours worked. (And any weeks where no hours were worked must be replaced by the last previous week where hours were worked)

Which method should be used as they both give different results.
Claire