SUBREDDIT: r/legaladvice
TITLE: No holiday pay due to ringing in sick before holiday period started. Sainsburys-Northern Ireland
POST: Hello, I'm an employee at Sainsburys and just before Christmas I booked a week off (I'm only working 4days a week- 16hrs)from the Sunday21st-Sunday27th of February. However before I managed to take time off I was ill and forced to ring in sick and thus miss one day of work before my holiday period would have took place.

Upon returning to work I was informed when completing my Return to Work form that I would not be getting paid for the holiday due to ringing in sick. I was told however that my holiday time would be put back into my given back to me. This would be fine except our holidays reset in a couple of days. So basically my holiday hours renaming will be going back to full in a couple days and I'm losing a quarter of my months wages.

Is this legal/allowed? I've read the employee handbook but nothing about it is mentioned in there. I really don't want to lose 1/4 of my months earnings. Thanks for any assistance. If you need me to clear anything up please ask.
TL;DR: 
Booked time off work, rang in sick before it started, upon completing my Return to Work form I was informed by my manager that I won't get any pay for my time off.