The answer can vary, but 30-40 hours a week is usually considered full time. How many hours a week is full-time employment vs part-time? The answer can vary, but 30-40 hours a week is usually considered full time. If youâre researching the question about what constitutes full-time and part-time hours, youâve likely run into different definitions in different places, and employers are generally able to develop their own definitions.