Abstract: Method when a user performs a work task, wherein the user wears and uses a wearable, actively controlled piece of force-assisting equipment (110) used to assist the user in the performing of the said work task, which force-assisting equipment (110) comprises a force-exerting means (112,113) for assisting the user in applying a particular force and/or for performing movements of a particular type, and a sensor means (115) for sensing a force applied by the user, wherein an assisting force exerted by said force-exerting means (112,113) is feedback-controlled based on an instantaneous measurement value from the sensor means (115). The invention is characterised in that the method comprises the steps of during the performance of said work task, measuring said measurement value using the sensor means (115) for use in said feedback control; and using the measurement value to automatically calculate an actual ergonomic risk or load value for the performed work task using the said force-assisting equipment (110).