Résumé : The annealing time dependence of enthalpy relaxation of a sample of polycarbonate pre-annealed at various temperatures close to the glass transition temperature, Tg, is investigated over an extended range to check the consequences implied by a previous treatment. The basic assumption is that yielding and annealing may be described by the same elementary process. It is shown here, at least, that kinetics of both phenomena are identical. The previous model has been recently improved by one of us, making clearer the nature of the implied process. The response of the improved model is compared to the enthalpy relaxation data: a satisfactory fit is found, similar to that previously obtained with yield stress measurements below and above Tg. © 1986.