A method for determining operating conditions of a working machine (2) having a vehicle drive-train (1) while the working machine (2) is operating. The operating conditions are determined by a classifier generated by a machine learning process. By way of the classifier, the values of at least one operating variable of the vehicle drive-train (1), determined while the working machine (2) is operating, can be assigned to respective predefined categories which, in each case, represent at least one operating condition of the working machine.