Cohabitation agreements govern a variety of issues. Generally they will determine how assets are dealt with during the relationship and what will happen should the relationship break down.
Usually, their primary purpose is to set out the parties’ respective interests in the family home and other property that they own. They can also cover financial obligations during the relationship; for example, who will be responsible for living expenses and debts.
If one or other of you work and the other stays at home this can be reflected in your agreement and provide for some form of maintenance should your relationship break down. There is however no legal obligation to include such a provision. It is advisable to avoid including behavioural arrangements in the agreement (such as who does the housework), as this can affect the enforceability of the agreement.