In this case it's a good thing.
I mean let's assume you are a sinkie would you want to work there as minority amongst them?
Didn't you guys read of the sinkie mudlay manager that was surrounded by 7-9 pinoys when he questioned a pinoy cashier on her poor service.
Unless you really don't have a choice it's better not to be employed there as a sinkie.
Unless you don't mind earning shit wages on top of being the odd one out by being a non pinoy and being bullied by them then you shouldn't worry about that.
Let's assume they have 99.9% pinoy employees so there's a non sinkie in there. How's he going to be treated? It's a job a non pinoy doesn't need to take.