i say TRUE...as it has happened to someone i know...ME!

from my understanding from past posts, a deadheading flight attendant only is confirmed in economy class and is subject to business class providing seats are available. but my understanding, is that unless all the flight attendants have exact same seniority, would the gate agent ask them for volunteers to sit in the back.

when i arrived at the gate to board the flight, they were paging my name, and i gotten an op upg. soon after, the announcement came that buisness was full, and to please board. then came the 5 or so flight attendants in uniform.