She has published several non-fiction books and written for many Canadian magazines including Chatelaine.
She served as Alberta representative to the board of governors of the Canadian Conference of the Arts (1996–2000).
She has also for several years been an executive member of the board of directors of the Parkland Institute, an organization dedicated to social research and located at the University of Alberta.
Kostash is the recipient of several Canada Council, Alberta Foundation for the Literary Arts and Secretary of State (Multiculturalism) grants.
[1] She has written for film, notably: And for stage: In 1985 she wrote a television drama And on radio: