A power-supply control device includes a transition section, a body-capable-of-movement detection section, a return control section, a reference-time-period setting section, a state determination section, and a correction section. The transition section shifts a state of an operation target section from one state to another state among a power-supply state and multiple types of non-power-supply states. The body-capable-of-movement detection section detects a body capable of movement. The return control section controls the transition section so as to return the state of the operation target section to the power-supply state. The reference-time-period setting section sets a reference time period. The state determination section checks a state of detection of the body capable of movement after the reference time period elapses. The correction section corrects the reference time period on the basis of detection position information.