  In this work we provide all the missing ingredients for calculating
parity-violating 3-jet observables in e^+e^- collisions at next-to-leading
order (NLO) including the full quark mass dependence. In particular we give
explicit results for the one-loop corrections and for the singular
contributions from real emission processes. Our formulae allow for the
computation of the NLO 3-jet contributions to the forward-backward asymmetry
for heavy flavours, which is -- and will be -- an important observable for
electroweak physics at present and future e^+e^- colliders.
