A work machine comprising: a multipoint type work implement having a bucket ; an actuator configured to drive the work implement ; an operation device configured to generate a speed command for the actuator according to an operation amount; and a controller configured to calculate a load value of a work target object on a basis of thrust information of the actuator while the work implement is transporting the work target object to a position above a transporting machine, characterized in that , the controller including a storage device configured to store a reference value for estimating whether or not a load overflow of the work target object from the bucket has occurred, the reference value being defined by a mutual relation between the load value of the work target object, a posture of the work implement , and a movement state of the work implement , calculating the posture of the work implement , calculating a physical quantity indicating the movement state of the work implement , estimating whether or not the work implement has caused the load overflow during transportation of the work target object on a basis of the reference value stored in the storage device, the load value of the work target object, the posture of the work implement , and the physical quantity indicating the movement state of the work implement , and further including a notifying device configured to make a notification of determination of occurrence of the load overflow by the controller . a multipoint type work implement having a bucket ; an actuator configured to drive the work implement ; an operation device configured to generate a speed command for the actuator according to an operation amount; and a controller configured to calculate a load value of a work target object on a basis of thrust information of the actuator while the work implement is transporting the work target object to a position above a transporting machine, characterized in that , the controller including a storage device configured to store a reference value for estimating whether or not a load overflow of the work target object from the bucket has occurred, the reference value being defined by a mutual relation between the load value of the work target object, a posture of the work implement , and a movement state of the work implement , calculating the posture of the work implement , calculating a physical quantity indicating the movement state of the work implement , estimating whether or not the work implement has caused the load overflow during transportation of the work target object on a basis of the reference value stored in the storage device, the load value of the work target object, the posture of the work implement , and the physical quantity indicating the movement state of the work implement , and further including a notifying device configured to make a notification of determination of occurrence of the load overflow by the controller . including a storage device configured to store a reference value for estimating whether or not a load overflow of the work target object from the bucket has occurred, the reference value being defined by a mutual relation between the load value of the work target object, a posture of the work implement , and a movement state of the work implement , calculating the posture of the work implement , calculating a physical quantity indicating the movement state of the work implement , estimating whether or not the work implement has caused the load overflow during transportation of the work target object on a basis of the reference value stored in the storage device, the load value of the work target object, the posture of the work implement , and the physical quantity indicating the movement state of the work implement , and further including a notifying device configured to make a notification of determination of occurrence of the load overflow by the controller . <EOS>