It has been suggested that for overweight and obese individuals high‐calorie foods are more reinforcing than for normal‐weight individuals. It has already been shown that in contrast to sedentary activities, snack food is more reinforcing for obese women, relative to normal‐weight women. However, it is unclear whether overweight/obese individuals are more sensitive to the reinforcing value of food in general or more specifically to the reinforcing value of high‐calorie foods. This was tested in the present study, with overweight/obese and normal‐weight individuals performing a concurrent schedules task, which measures how hard someone is prepared to work for high‐calorie snacks compared to low‐calorie foods (e.g., fruits, vegetables), when both foods are equally liked. By gradually increasing the amount of work required to earn snacks, the relative‐reinforcing value of snacks was determined. As hypothesized, overweight/obese individuals work harder for high‐calorie snacks compared to normal‐weight individuals.