奥娜·热，Zee reportedly worked for the Wilhelmina Agency in the 1970s.[citation needed] She also did nude modeling and later decided to move into pornographic videos. She starred or appeared in over 300 adult movies since entering the industry in 1986.[2] She was about 35 years old when she began, an age when many adult performers have already retired.[2] She typically played what would later be called MILF or "cougar" roles. "I am an exhibitionist, so to take it to the nth degree was obviously where I was going. It took me a little longer to get there than some women but I knew I could be one of the best actresses in adult films, if not the best," she said in an interview.[3] For 67 videos she served as director, writer and producer. In 1990, she formed her own production company, Ona Zee Pictures.[2] The company initially focused on bondage titles, but later moved on to other genres as well, such as feature and girl-girl movies.[2][4] During the 1990s she formed a pornographic performers' union, but it ultimately collapsed due to lack of political and legal support.