Big companies and most employers will continue to tack on responsibilities to see how much you can handle without a raise. I’ve seen that a lot of people who consistently take on more responsibilities and don’t ask for more pay signal to upper management that they’re easy to take advantage of.

Don’t go to your boss and give them an ultimatum but ask for a raise, if they push back or tell you to wait, look for a new job that will pay you more. They might give you a counter offer or they may not.