Maybe he works at home, I do and I'm sure many others have a second job working at home too.  Not sure how having a second job makes it questionable. Is it bc his second salary is a lot?  I say, lucky him. 
We don't know exactly how many hours he's required to work for the bank. I think this article is "fishing" or trying to create something without any evidence of wrong doing. 
I'm no fan of our current mayor but having evidence would have helped this article.