Holiday pay & shift allowance

LegacyUser

I work a compressed work week over 4 days and as such receive a shift allowance of 10% per month on top of my basic salary (2.5% per week)

I took vacation for one week in December, my scheduled 4 day week.

When I got my pay slip in January I see that I received a shift allowance of 7.5% for the month which appears to be for working on shift for 3 out of 4 weekends.

The question I have is:
Is your vacation pay only your basic salary for that week/month or should it include your basic pay plus shift as that is your regular work week?

tatli_lokma

citizensinformation.ie wrote:

Holiday pay: Pay in respect of annual leave is paid in advance at the normal weekly rate. If your pay varies because, for example, of commission or bonus payments, your pay for your holidays is the average of your pay over the 13 weeks before you take holidays.

http://www.citizensinformation.ie/en/employment/employment_rights_and_conditions/leave_and_holidays/annual_leave_public_holidays.html