Does it work as well as in person?
The evidence says yes, for most people, for most issues. What matters more than the format is whether you can be honest with the person on the other end.
Making it work
- Find a quiet room where you won't be interrupted.
- Headphones help — both for privacy and for being able to hear tone properly.
- Block 15 minutes after the session to let it settle, not jump straight back into a meeting.