My co worker is offloading his work to me

My co worker and I have the same position and title. He’s worked for the company for nearly a decade and I started a little over a year ago. Over time I’ve noticed I’ve taken over his responsibilities that he had before I was hired. He has access to the same systems and logins as me. However, whenever I’m busy and an employee comes and asks him for help with a payroll thing he sends them my way as if he doesn’t have the same access! Or he’ll ask me to do something he can easily do himself (like clock in an employee). I’ve noticed the past few months that he doesn’t really do much at all during the day. He takes multiple restroom breaks that are like 10 minutes long, he’s late everyday, and he basically just sends out emails and that’s it. Our managers will talk about things they want us to work on, and then he’ll tell ME that it’s gonna be MY new responsibility, not OURS when my managers aren’t around. I’m just annoyed 😒 what should I do? Just leave it ?

Author: Cool-cat-199