1. Talk to the person about the specific behaviour(s) that are affecting your work. It doesn't need to be a big deal to start with, it can be a simple and casua

1. Talk to the person about the specific behaviour(s) that are affecting your work. It doesn't need to be a big deal to start with, it can be a simple and casual "can you please $x". 2. If talking to the person doesn't work, talk to your manager about how your work is being affected. 3. In both cases stick to specific behaviours and how they impact your work and the team's output. It's not your place to evaluate other people's overall job performance.