 Saisio has a broad literary output, dealing with many kinds of texts from film screenplays all the way to librettos for the ballet.Her novel "Betoniyö" (1981) was adapted into a feature film "Concrete Night" in 2013 by Pirjo Honkasalo.Saisio received her degree in acting from Suomen teatterikoulu (now Theatre Academy) in 1975 and worked there as a professor of dramaturgy in 1997 and 2001.