The Inside Out blog has a story on a newspaper reporter for the Oregonian being fired for writing a magazine piece without permission from the newspaper.
Most newspaper reporters know they need to clear any outside journalism efforts with their editors before working for another publication.
In the days after Jack Kevorkian assisted with his first suicide, I was contacted by the editor of Newsday and with permission from my editor submitted three or four stories, including one that ran on the front page of Newsday, about my interviews with Jack Kevorkian.
All the stories were merely rewrites of what I had already done for the Journal. It was pretty easy money. About three days in Newsday sent their own reporter to the area and my little gig was up.
I ended up making about $3,500 from the work, which helped by my first real home computer - an Acer, I believe, which in those days had about 1 gig of memory and cost more than $3,000.