An occupant restriction device includes a shock absorbing body that is installed in a lower portion of a dashboard of a vehicle in front of an occupant's seat and arranged to be generally in front of left and right kneecaps of an occupant when the occupant sits on the occupant seat. The occupant restriction device is configured such that a rigidity of a transverse center portion of the shock absorbing body is higher than a rigidity of left and right side portions of the shock absorbing body. As a result, when the vehicle undergoes an offset collision or other collision in which the occupant's legs form a closed leg sitting posture, the highly rigid transverse center portion is configured to hold the occupant's kneecaps moderately open to prevent the occupant's legs from forming the closed leg sitting posture. Thus, the occupant restriction device can provide a stable shock alleviation effect.