Method for dynamically detecting a faulty operation of a load lifting device, wherein the load lifting device comprises at least one force sensor cooperating with a loadhandling device, comprising the following steps: monitoring a signal of the force sensor for an increase, the signal being proportional to a force exerted by the load-handling device; if an increase is detected, checking whether a nominal overload threshold is exceeded; if the nominal overload threshold is exceeded, generating a switch-off signal for switching off the load lifting device within a period of time as short as possible; characterized by: defining a time period required for lifting the load-handling device with or without an additional load; if the increase is detected, monitoring the signal during the defined time period for an exceeding of the nominal overload threshold; if the overload threshold is not exceeded during the defined time period, determining an average weight force from the signal, and establishing the average weight force as a base load; establishing a dynamic jump threshold as the overload threshold which is greater than the base load and which is smaller than the nominal overload threshold; and monitoring the signal whether the signal becomes greater or equal to the jump threshold, which is established as the overload threshold, and generating the switching-off signal if the signal is greater than or equal to the jump threshold being established as the overload threshold. monitoring a signal of the force sensor for an increase, the signal being proportional to a force exerted by the load-handling device; if an increase is detected, checking whether a nominal overload threshold is exceeded; if the nominal overload threshold is exceeded, generating a switch-off signal for switching off the load lifting device within a period of time as short as possible; characterized by: defining a time period required for lifting the load-handling device with or without an additional load; if the increase is detected, monitoring the signal during the defined time period for an exceeding of the nominal overload threshold; if the overload threshold is not exceeded during the defined time period, determining an average weight force from the signal, and establishing the average weight force as a base load; establishing a dynamic jump threshold as the overload threshold which is greater than the base load and which is smaller than the nominal overload threshold; and monitoring the signal whether the signal becomes greater or equal to the jump threshold, which is established as the overload threshold, and generating the switching-off signal if the signal is greater than or equal to the jump threshold being established as the overload threshold. defining a time period required for lifting the load-handling device with or without an additional load; if the increase is detected, monitoring the signal during the defined time period for an exceeding of the nominal overload threshold; if the overload threshold is not exceeded during the defined time period, determining an average weight force from the signal, and establishing the average weight force as a base load; establishing a dynamic jump threshold as the overload threshold which is greater than the base load and which is smaller than the nominal overload threshold; and monitoring the signal whether the signal becomes greater or equal to the jump threshold, which is established as the overload threshold, and generating the switching-off signal if the signal is greater than or equal to the jump threshold being established as the overload threshold.