A work machine comprising: a telescopic boom having a first boom and a second boom that are telescopically overlapped; a telescoping actuator that moves the first boom in a telescoping direction with respect to the second boom; an electrical drive source provided in a movable portion of the telescoping actuator; a first fixing pin that connects the telescoping actuator and the first boom; a first biasing mechanism that biases the first fixing pin to maintain a connection state between the telescoping actuator and the first boom; a first connection mechanism that operates on the basis of the power of the electrical drive source, the first connection mechanism switching between the connection state and a disconnection state between the telescoping actuator and the first boom by inserting and removing the first fixing pin; the work machine being characterized in that it further comprises: a second fixing pin (315, 325) that connects the first boom and the second boom; a second biasing mechanism that biases the second fixing pin (315, 325) to maintain a connection state between the first boom and the second boom; a second connection mechanism that operates on the basis of the power of the electrical drive source, the second connection mechanism switching between the connection state and a disconnection state between the first boom and the second boom by inserting and removing the second fixing pin (315, 325); and a clutch that is disposed in a power transmission path from the electrical drive source to the first connection mechanism and the second connection mechanism, the clutch discretionally intermittently transmitting the power of the electrical drive source to the first connection mechanism and the second connection mechanism. a telescopic boom having a first boom and a second boom that are telescopically overlapped; a telescoping actuator that moves the first boom in a telescoping direction with respect to the second boom; an electrical drive source provided in a movable portion of the telescoping actuator; a first fixing pin that connects the telescoping actuator and the first boom; a first biasing mechanism that biases the first fixing pin to maintain a connection state between the telescoping actuator and the first boom; a first connection mechanism that operates on the basis of the power of the electrical drive source, the first connection mechanism switching between the connection state and a disconnection state between the telescoping actuator and the first boom by inserting and removing the first fixing pin; the work machine being characterized in that it further comprises: a second fixing pin (315, 325) that connects the first boom and the second boom; a second biasing mechanism that biases the second fixing pin (315, 325) to maintain a connection state between the first boom and the second boom; a second connection mechanism that operates on the basis of the power of the electrical drive source, the second connection mechanism switching between the connection state and a disconnection state between the first boom and the second boom by inserting and removing the second fixing pin (315, 325); and a clutch that is disposed in a power transmission path from the electrical drive source to the first connection mechanism and the second connection mechanism, the clutch discretionally intermittently transmitting the power of the electrical drive source to the first connection mechanism and the second connection mechanism. a second fixing pin (315, 325) that connects the first boom and the second boom; a second biasing mechanism that biases the second fixing pin (315, 325) to maintain a connection state between the first boom and the second boom; a second connection mechanism that operates on the basis of the power of the electrical drive source, the second connection mechanism switching between the connection state and a disconnection state between the first boom and the second boom by inserting and removing the second fixing pin (315, 325); and a clutch that is disposed in a power transmission path from the electrical drive source to the first connection mechanism and the second connection mechanism, the clutch discretionally intermittently transmitting the power of the electrical drive source to the first connection mechanism and the second connection mechanism.