NORMALITY
all in a day's work
part of what is expected; typical or normal.I don't particularly like to cook, but it's all in a day's work.Putting up with rude customers isn't pleasant, but it's all in a day's work.Cleaning up after other people is all in a day's work for a chambermaid.
as a matter of course
normally; as a normal procedure.The nurse always takes your temperature as a matter of course.You are expected to make your own bed as a matter of course.
business as usual
having things go along as usual.Right after the flood, it was business as usual in all the stores.Please, everyone, business as usual. Let's get back to work.
same old story
something that occurs or has occurred in the same way often.Jim's got no money. It's the same old story. He's spent it all on clothing.The company is getting rid of workers. It's the same old story—a shortage of orders.