Abstract: The invention relates to a machine for performing work on land and/or in water, which comprises an underframe which moves on wheels or corresponding mechanism, a platform body on top of the underframe, and extension arm attached to the underframe which rotates in relation to the underframe and platform body and a work implement attached to the extension arm. A machine according to the invention has an extension arm which is a telescopic extension arm, to the end of which detachable work implements may be attached, a platfrom body which is attached to the underframe and can move along the longitude of the underframe, and a front edge on the platform body which is essentially open to enable loading and unloading.