Office Headphone Syndrome

When many colleagues in the office wear headphones almost constantly, appearing busy and unavailable for collaboration.

My team at work has office headphone syndrome. We work in the same room and supposed to collaborate with each other, but many people wear headphones almost constantly while working on the computer and appear busy and inaccessible. It's awkward to constantly ask them to take off their headphones, so they're effectively absent, as if they're working remotely.