He wasn’t paid any extra for this. And what he did was entirely constitutional and other Prime Ministers have done similar before.
This is only a news story because the left wing media want to use it to bash a conservative.
I’m glad that he didn’t get paid, because that’s usually the reason why a government minister will head up as many ministries as he can handle.
It makes think a bit higher of him.
I like it when I read a principled politician, because they are so rare in any country.