SCALETTA MIGLIORATA PER VEICOLO DA LAVORO

There is described a step ladder (1) for a work vehicle (10), comprising a frame (2) configured to be fixed to a portion of the work vehicle (10) and a plurality of steps (3; 4) carried by the frame (2); the steps (3; 4) are arranged one above the other along a first direction (Z) and extend along a second direction (Y) transversal to the first direction (Z); one step (4) is movably carried by the frame (2) so that it can be slidably adjustable along a third direction (X) between a first and a second operative positions (I, II); the third direction (X) being transversal to the first and second directions (Z, Y); the step ladder (1) further comprises first cam means (5) and fixing means (7); the first cam means (5) support in a movable manner a side (4a; 4b) of the step (4) with respect to the frame (2) and the fixing means (7) lock another side (4b; 4a) of the step (4) with respect to the frame (2) in the first and second operative positions (I, II).