Abstract: A process for developing a statistical model to forecast the workload of an aircraft pilot (20), in particular that of a commercial airline pilot, as a function of objective flight parameters, wherein, during the course of at least one flight (real or simulated) of the aircraft, under defined flying conditions and flight conditions and stages which constitute the flight parameters, the aircraft pilot is asked to provide a rating of his workload according to a predefined scale, wherein this rating is logged at the same time as the corresponding flight parameters, and, simultaneously, the value of the significant data of the said parameters is measured, wherein, finally, a statistical correlation is established between the workload rating values on the one part and the aforesaid data and flight parameters on the other part.