  We calculate the standard model predictions for top quark pair production and
decay into six fermions at a linear e+ e- collider. We include the factorizable
electroweak O(alpha) corrections in the pole approximation and QED corrections
due to the initial state radiation in the structure function approach. The
effects of the radiative corrections on the predictions are illustrated by
showing numerical results for two selected six-fermion reactions e+ e- -> b
nu_mu mu+ bar{b} mu- bar{nu_mu} and e+ e- -> b nu_mu mu+ bar{b} d bar{u}.
