Overtime in your state is based on only two things:1) If you work more than 40 hours in a workweek; or 2) If you work more than 8 hours in a day.If you don't get a lunch break, you are working for what would normally have been lunch, so it counts towards how many hours or how much time you are working. Therefore, if you don't take a lunch break but work through it, and therefore work 8.5 hours, you should get 0.5 hours of overtime that day.