They want better pay and more jobs.
Hundreds of Ontario's nurses waved flags and signs at Queen's Park hoping the province will do something.
They chanted "More jobs" over and over again, as the Health Minister met with some of those in the crowd.
Nurses say fewer jobs means the patients suffer by not getting the care they need right away, pointing to things like medication or tests while in the hospital.
Organizers say Ontario has the lowest number of nurses per capita in the country.
Health Minister Deb Matthews disputes their claims of cutbacks, noting there are 20,500 more nurses in the province than 10 years ago. She calls them the back-bone of society.
Matthews says that's not just in hospitals but in the expansion of things like homecare as well.