A glass-plate working apparatus comprising: at least two processing positions which each have a glass-plate supporting portion for supporting thereon a glass plate subject to processing and are arranged with an interval therebetween; and a transporting device for transferring the glass plate from the glass-plate supporting portion of one of said at least two processing positions to the glass-plate supporting portion of another one of said at least two processing positions, said transporting device including a transport shuttle which reciprocates between the glass-plate supporting portions of said one and said other processing positions and a suction pad mounted on the transport shuttle through a lifting unit, the transporting device being adapted to transport the glass plate from said one processing position to said other processing position through the reciprocating movement of the transport shuttle, the raising and lowering of the suction pad by the lifting unit, and the suction of, and releasing of suction of, the glass plate by the suction pad, characterized in that, the lifting unit includes a slider crank mechanism having a crankshaft and a slider, and a slide unit for guiding the linear raising and lowering of the slider, said slide unit comprises a pair of slide unit bodies each having a slide shaft, and a coupling body which couples the slide shafts and which has a lower surface on which the suction pad is mounted, the crankshaft being coupled to a lifting motor mounted on the transport shuttle, the suction pad being mounted on the slider and adapted to be linearly raised and lowered by the operation of the lifting motor. at least two processing positions which each have a glass-plate supporting portion for supporting thereon a glass plate subject to processing and are arranged with an interval therebetween; and a transporting device for transferring the glass plate from the glass-plate supporting portion of one of said at least two processing positions to the glass-plate supporting portion of another one of said at least two processing positions, said transporting device including a transport shuttle which reciprocates between the glass-plate supporting portions of said one and said other processing positions and a suction pad mounted on the transport shuttle through a lifting unit, the transporting device being adapted to transport the glass plate from said one processing position to said other processing position through the reciprocating movement of the transport shuttle, the raising and lowering of the suction pad by the lifting unit, and the suction of, and releasing of suction of, the glass plate by the suction pad, characterized in that, the lifting unit includes a slider crank mechanism having a crankshaft and a slider, and a slide unit for guiding the linear raising and lowering of the slider, said slide unit comprises a pair of slide unit bodies each having a slide shaft, and a coupling body which couples the slide shafts and which has a lower surface on which the suction pad is mounted, the crankshaft being coupled to a lifting motor mounted on the transport shuttle, the suction pad being mounted on the slider and adapted to be linearly raised and lowered by the operation of the lifting motor.