This work presents an experimental investigation on the creep behavior of an epoxy resin with emphasis on characterizing the effects of physical aging, temperature, sorbed moisture, and applied stress. A numerical method was used for determining the stress dependent parameters of Schapery's nonlinear creep equation. TheTgof the resin investigated here was close to ambient temperature (46°C) so that the creep effects are rather pronounced without having to heat the resin to higher temperatures. The effects of moisture, temperature and of physical aging on the resin are therefore very strong. The effect of physical aging can be clearly seen in the transient compliance while the initial compliance is less affected. It was observed that the creep exponentnseems not only to be dependent on the physical age of the polymer and on the absorbed moisture but also on the applied stress. It was observed that lognand the logarithms of the initial and transient compliances change linearly with log (time). This makes it easy to extend Schapery's equation to include the effects of physical aging.