A method for laser welding conductor wires (5, 7), in particular conductor wires (5, 7) arranged in slots of a core of a dynamo electric machine, such as a stator core, to form a winding, wherein a first end of a first conductor wire and a second end of a second conductor wire are arranged adjacent to each other, and a laser beam is applied to a first end surface of the first conductor wire and a second end surface of the second conductor wire to weld together the first end of the first conductor wire and the second end of the second conductor wire, the first end surface and the second end surface, preferably pointing upwards, preferable the first end surface and the second end surface being axial end surfaces, characterized in that the method comprises the following steps: - (i) applying a laser beam in a first substantially closed path within the first end surface to form a first molten pool; and subsequently either - (iia) applying the laser beam in a second substantially closed path within the second end surface to form a second molten pool; and subsequently - (iiia) applying the laser beam in a path (20, 23) starting at the first molten pool to the second end surface and/or in a third substantially closed path to the first end surface and to the second end surface connecting the first and second molten pool or (iiib) applying the laser beam in a path (20, 23) starting at the first molten pool to the second end surface and/or in a third substantially closed path to the first end surface and to the second end surface; and subsequently (iib) applying the laser beam in a second substantially closed path within the second end surface to form a second molten pool, such that the path (20, 23) and/or the third substantially closed path connects the first molten pool and second molten pool. wherein a first end of a first conductor wire and a second end of a second conductor wire are arranged adjacent to each other, and a laser beam is applied to a first end surface of the first conductor wire and a second end surface of the second conductor wire to weld together the first end of the first conductor wire and the second end of the second conductor wire, the first end surface and the second end surface, preferably pointing upwards, preferable the first end surface and the second end surface being axial end surfaces, characterized in that the method comprises the following steps: - (i) applying a laser beam in a first substantially closed path within the first end surface to form a first molten pool; and subsequently either - (iia) applying the laser beam in a second substantially closed path within the second end surface to form a second molten pool; and subsequently - (iiia) applying the laser beam in a path (20, 23) starting at the first molten pool to the second end surface and/or in a third substantially closed path to the first end surface and to the second end surface connecting the first and second molten pool or (iiib) applying the laser beam in a path (20, 23) starting at the first molten pool to the second end surface and/or in a third substantially closed path to the first end surface and to the second end surface; and subsequently (iib) applying the laser beam in a second substantially closed path within the second end surface to form a second molten pool, such that the path (20, 23) and/or the third substantially closed path connects the first molten pool and second molten pool. - (i) applying a laser beam in a first substantially closed path within the first end surface to form a first molten pool; and subsequently either - (iia) applying the laser beam in a second substantially closed path within the second end surface to form a second molten pool; and subsequently - (iiia) applying the laser beam in a path (20, 23) starting at the first molten pool to the second end surface and/or in a third substantially closed path to the first end surface and to the second end surface connecting the first and second molten pool or (iiib) applying the laser beam in a path (20, 23) starting at the first molten pool to the second end surface and/or in a third substantially closed path to the first end surface and to the second end surface; and subsequently (iib) applying the laser beam in a second substantially closed path within the second end surface to form a second molten pool, such that the path (20, 23) and/or the third substantially closed path connects the first molten pool and second molten pool. in a third substantially closed path to the first end surface and to the second end surface connecting the first and second molten pool or (iiib) applying the laser beam in a path (20, 23) starting at the first molten pool to the second end surface and/or in a third substantially closed path to the first end surface and to the second end surface; and subsequently (iib) applying the laser beam in a second substantially closed path within the second end surface to form a second molten pool, such that the path (20, 23) and/or the third substantially closed path connects the first molten pool and second molten pool.