Termination of employment/Aufhebungs- und Abwicklungsvertrag

I haven't previously had to translate Abwicklungsvertrag. This was in the context of an attorney's practice areas, which included drafting Aufhebungsverträge (a contract terminating employment) and Abwicklungsverträge (a contract dealing with the end of employment, after termination has already taken place).

I decided to go for termination agreements and post-termination agreements (the employment context was clear). I could imagine using the German terms in brackets in some contexts. If Harald Schwamborn's definitions are correct, I don't think there is anything in English law quite like an Abwicklungsvertrag:

Beim Aufhebungsvertrag wird das Arbeitsverhältnis durch den Vertrag beendet. Beim Abwicklungsvertrag geht eine Kündigung - in der Regel des Arbeitgebers - voraus. Das Arbeitsverhältnis wird also nicht durch den Abwicklungsvertrag beendet, sondern durch die vorausgehende Kündigung. In dem Abwicklungsvertrag wird lediglich geregelt, “wie man auseinander geht”.

I do find the discussions on proz.com a great resource, although I decided not to follow the results of this one. Kim found an excellent resource at Jones Day (link doesn't work for me), which suggested settlement agreement. The original asker's client obviously had no idea how to deal with the term:

In unserer arbeitsrechtlichen Praxis finden Verwendung: Aufhebungsvertrag - settlement agreement Abwicklungsvertrag - contract finalizing agreement Abwicklung eines Vertrages - winding up a contract

I found a description of German labour law in English at the ILO, but it doesn't have enough German terminology interspersed.