This chapter examines the ‘indirect application model’ in constitutional law whereby fundamental rights do not apply ‘directly’ to the relations between individuals but nevertheless influence the content of the private law legal rules that apply between non-state actors. The legal rules though articulate the obligations of non-state actors and, if fundamental rights affect those rules, they affect the obligations of non-state actors. I argue that the indirect application model has several drawbacks – including weakening rights and undermining their relational dimension - but ultimately collapses into a form of direct application model. I thus examine, through this lens, seminal cases in Germany and South Africa, seeking to understand what approach courts utilize to construct the substantive content of the obligations of non-state actors. The analysis highlights that courts draw on a number of factors together with an amorphous balancing process to determine those obligations – similar to the other models analysed in the book.