I did that for a while. Then I got bored with loitering around the premises for 8 hours every day. It’s not much of a benefit. There’s only so much time I can spend doomsscrolling before starting to wonder if I’m getting paid enough to waste my life doing that.

The better approach is to ask for more pay. There’s a couple of steps to that.

At the next salary review ask your boss what you need to do to get paid more. Being in a position where it appears as if you’re already strung out on critical tasks isn’t the best setup for asking for more work, so at least have the decency to show some surplus energy. This is how you make sure you’re paid for taking on more tasks.

If they don’t have anything else to offer, you can still ask them why they don’t pay you more for your current tasks. They’ll have no clue, so it’s likely that they’ll come up with something stupid, like “you don’t keep the trashbin empty” or whatever. You can then proceed to empty the fucking trashbin daily and then go ask for more pay. You can plan this move in advance by not emptying the trashbin for a while.

So I know, “we don’t have salary reviews”. Well, duh, of course not. You need to ask for that first, but hear this: Don’t ask for a salary review. Ask them when is the next salary review. This is the question you need to know the answer to for you to evaluate if you even want to spend your life in that place at all.