A power tool having a hammer mechanism includes a first housing, a motor housed in the first housing, a second housing that at least partially covers the first housing, and a controller housed in the second housing. The second housing is coupled to the first housing via at least one elastic member to be movable relative to the first housing in a first direction that is parallel to the driving axis. The second housing has at least one opening for wiring. The at least one opening communicatively connects an inside and an outside of the second housing. At least one electric wire extends from the controller to the outside of the second housing through the at least one opening.