A machine for removing beams from underneath formwork at an underside of a concrete slab includes a wheeled base movable on and supported at a support structure, a raisable-and-lowerable structure disposed on the wheeled base, and a beam-removal device coupled to the raisable-and-lowerable structure. The beam-removal device includes a beam-gripping mechanism. With the raisable-and-lowerable structure raised to position the beam-removal device at a beam that supports the formwork at the underside of the concrete slab, the beam-gripping mechanism operates to grasp the beam. With the beam grasped by the beam-gripping mechanism, the machine is operated to remove the beam from the formwork.