In our store anything over 4 but under 6 gets 15 minutes, over 6 but under 8 gets 20 minutes then 8 hours gets 30 minutes. If you work the 9 hour shift then you get an hours unpaid break and 30 minutes paid which you can choose to take in two 15 minutes breaks if you want. I don't know what over 9 hours get, but generally it's the nightshift colleagues that do over 9 anyway.