A work vehicle, comprising: an engine; a hydraulic pump driven by the engine; a work implement driven by hydraulic fluid discharged from the hydraulic pump; a power transmission device having an electric motor (MG1, MG2); a travel device that causes the vehicle to travel due to driving power outputted from the power transmission device; an accelerator operating member; and a control unit configured to control the power transmission device; wherein, the control unit has: a transmission requirement determination unit for determining, on the basis of an operating amount (Aac) of the accelerator operating member, a required tractive force that is a target tractive force of the travel device; a command-torque determination unit for determining an output torque of the electric motor (MG1, MG2) so that the tractive force of the vehicle reaches the required tractive force; and a tractive force limiting unit for reducing the required tractive force to a value lower than a value corresponding to the operating amount (Aac) of the accelerator operating member while the vehicle is excavating, wherein the tractive force limiting unit corrects the operating amount (Aac) of the accelerator operating member to a value smaller than the actual operating amount (Aac) while the vehicle is excavating; and the transmission requirement determination unit determines the required tractive force on the basis of the corrected operating amount (Aac) of the accelerator operating member. an engine; a hydraulic pump driven by the engine; a work implement driven by hydraulic fluid discharged from the hydraulic pump; a power transmission device having an electric motor (MG1, MG2); a travel device that causes the vehicle to travel due to driving power outputted from the power transmission device; an accelerator operating member; and a control unit configured to control the power transmission device; wherein, the control unit has: a transmission requirement determination unit for determining, on the basis of an operating amount (Aac) of the accelerator operating member, a required tractive force that is a target tractive force of the travel device; a command-torque determination unit for determining an output torque of the electric motor (MG1, MG2) so that the tractive force of the vehicle reaches the required tractive force; and a tractive force limiting unit for reducing the required tractive force to a value lower than a value corresponding to the operating amount (Aac) of the accelerator operating member while the vehicle is excavating, wherein the tractive force limiting unit corrects the operating amount (Aac) of the accelerator operating member to a value smaller than the actual operating amount (Aac) while the vehicle is excavating; and the transmission requirement determination unit determines the required tractive force on the basis of the corrected operating amount (Aac) of the accelerator operating member. a transmission requirement determination unit for determining, on the basis of an operating amount (Aac) of the accelerator operating member, a required tractive force that is a target tractive force of the travel device; a command-torque determination unit for determining an output torque of the electric motor (MG1, MG2) so that the tractive force of the vehicle reaches the required tractive force; and a tractive force limiting unit for reducing the required tractive force to a value lower than a value corresponding to the operating amount (Aac) of the accelerator operating member while the vehicle is excavating, wherein the tractive force limiting unit corrects the operating amount (Aac) of the accelerator operating member to a value smaller than the actual operating amount (Aac) while the vehicle is excavating; and the transmission requirement determination unit determines the required tractive force on the basis of the corrected operating amount (Aac) of the accelerator operating member.