The image forming apparatus includes: a sleep control unit which, in a normal operation mode in which power is supplied to a fixing device, if predetermined processing is not executed for a preset time or if an instruction to execute shifting to a power-saving mode with lower power consumption than in the normal operation mode is received, makes a shift to a sleep mode with a lower power consumption than in the normal operation mode, in which at least power supply to the fixing device is stopped; and a super-sleep control unit which makes a shift to a super-sleep mode in which a power source of a processor is turned off if predetermined processing is not executed for a shorter time than the preset time after the shift to the sleep mode is made.