Though may not work as well with direct requests or with supervisors.
Using the Term
Another coworker has a gift of making people feel immediately welcome through her warm demeanor.
She often addresses clients with 'friend' as they come in to a workshop or a group event. She does it so naturally and usually people respond to it well. It sets a friendly environment. With time I've adopted using this greeting as people filter into a room. And OK, a couple of times in informal situations outside work with strangers.