[falcolas]

> commercial pilots, they wear headphones all the time

Err, that's because they use those headphones to communicate with ATC and other pilots. And protect their hearing.

> You are paid as a servant of the company and that duty includes responding to and assisting your co-workers.

That... depends. If your job includes some mentoring, absolutely. If your job is go get a feature out the door by Friday, you can't necessarily afford to be interrupted by Tony from sales.