The present disclosure relates to a method of determining whether a frame (11) of a work machine (10) is approaching a tip over point. The frame (11) includes first and second support arrangements (20) each supporting a portion of the load of the frame (11) on a surface. A first load upon the first support arrangement is detected using first sensing means (34) and a second load upon the second support arrangement is detected using second sensing means. Signals are generated indicative of the first and second loads. The signals are communicated to a controller. The controller is configured to generate an alert based upon the first and second loads when the first and/or second load signals indicate that the orientation of the work machine is approaching a tip over point.