A device for laying sleepers on a ballast-bed for railroad construction, the device comprising: - a body having a commuting-mechanism , wherein the commuting-mechanism is operable to allow movement of the device; - a fork-lift arranged on a first side of the body, wherein the forklift is operable to lift and hold at least one set of sleepers above the ballast-bed; characterized in that the device comprising: - a pair of pivot-arms movably coupled the body, wherein each of the pivot-arms comprises a gripper , and wherein the grippers of the pair of pivot-arms are operable to pick a set of sleepers from the forklift and to move the set of sleepers from the first side of the body towards a second side of the body opposite to the first side; - a cradle-arrangement mounted on the second side of the body, wherein the cradle-arrangement comprises: - a pair of elongated fixed support-members extending from the second side of the body and spaced apart from each other; and - a pair of movable support-members , wherein each of the movable support-members comprises a plurality of spring-loaded elements operable to attain a closed-state and a released-state, wherein the pair of movable support-members includes an extension plate for receiving a released sleeper during a forward phase, and wherein - the pair of elongated fixed support-members is operable to support thereon the set of sleepers moved by the grippers of the pair of the pivot-arms from the first side of the body towards the second side of the body, and - the pair of movable support-members is operable to have a reciprocating-movement with respect to the pair of elongated fixed support-members to successively release one sleeper of the set of sleepers at a time from the pair of elongated fixed support-members. - a body having a commuting-mechanism , wherein the commuting-mechanism is operable to allow movement of the device; - a fork-lift arranged on a first side of the body, wherein the forklift is operable to lift and hold at least one set of sleepers above the ballast-bed; - a pair of pivot-arms movably coupled the body, wherein each of the pivot-arms comprises a gripper , and wherein the grippers of the pair of pivot-arms are operable to pick a set of sleepers from the forklift and to move the set of sleepers from the first side of the body towards a second side of the body opposite to the first side; - a cradle-arrangement mounted on the second side of the body, - a pair of elongated fixed support-members extending from the second side of the body and spaced apart from each other; and - a pair of movable support-members , wherein each of the movable support-members comprises a plurality of spring-loaded elements operable to attain a closed-state and a released-state, wherein the pair of movable support-members includes an extension plate for receiving a released sleeper during a forward phase, - the pair of elongated fixed support-members is operable to support thereon the set of sleepers moved by the grippers of the pair of the pivot-arms from the first side of the body towards the second side of the body, and - the pair of movable support-members is operable to have a reciprocating-movement with respect to the pair of elongated fixed support-members to successively release one sleeper of the set of sleepers at a time from the pair of elongated fixed support-members. <EOS>