What does this work agreement mean? Should I sign it?

Will they just be able to fire me without “just cause” I am only paid monthly as well.. What are your thoughts on this form https://preview.redd.it/95n3tw6z8gm81.jpg?width=749&format=pjpg&auto=webp&s=e82e356123c455e3a63fc7bdb2f82bf2d06262dc