The invention relates to a container, in particular as a work room, with variable volume, having a basic container with a bottom wall and a roof wall, at least one expansion element, which can be moved out of the basic container and which exhibits a bottom wall, a side that is open in the direction of the basic container, as well as a front wall opposite the open side, and a device, with which the expansion element can be lowered and lifted. The basic container exhibits at least one hinged side wall and the expansion element is open at the top. In the moved-out state a roof wall of the expansion element is formed by the side wall that is opened up on hinges and belongs to the basic container.
