This publication contains an encompassing layout of the generic requirements common to all types of collections based on unjustified enrichment.

This work starts by examining the general principles and the generic requirements of liability for unjustified enrichment, after which the discussion turns to the traditional condictiones as developed illustrations of enrichment liability.

Table of contents 

Chapter 1 - Preliminary - general premise

Chapter 2 - Generic requirements for a claim in enrichment

Chapter 3 - Condictio causa data causa non secuta

Chapter 4 - Condictio ob causam finitam

Chapter 5 - Condictio ob turpem causam

Chapter 6 - Condictio furtiva

Chapter 7 - Actio negotiorum gestorum contraria - Action resulting from unauthorized administration of another's affairs

Chapter 8 - Condictio indebt - the claim for indebted payment

Chapter 9 - Condictio sine causa