Depends on the project, some projects you can pickup 40+ hours a week. Some you are fighting for scraps with everyone else. Other weeks your project is dead and you are scrambling for a new project with zero hours for several weeks.
You can work as little or as many hours but they have this thing called scheduling and segregate the team into three groups with group one being offered the sought after hours.
Answered - Customer service contractor (Former Employee) - Atlanta, GA