Even people who don’t feel true anxiety on Sunday evenings might still get a little grumpy. Usually, it's a sign that they’re facing some problems at work, even if they haven’t fully acknowledged them yet. AdvertisementWhen someone gets grumpy every Sunday evening, they usually have these specific issues at work1. They’re working too hardIt’s easy to see why doing too much work would make people dread the week ahead on Sunday nights. That makes the start of a new week feel like five days of nothing but work that they have to push their way through.