So, writing your policies can be a simple matter of formalizing decisions which have already been made. Writing decisions in the form of policies and distributing them to paid and volunteer staff can lend them greater import and perhaps better ensure compliance. Many policies are developed because of crises or problems. When something goes wrong, it becomes apparent that a position or policy is needed, either to decide what to do now, or to prevent the situation from recurring. So policies determine action and set boundaries beyond which one cannot go.
Policies clarify responsibilities and define lines of communication and accountability.
Policies provide a structure for sound management. Since they often identify the 'what' and sometimes even the 'how,' they can bring about program improvements and increase effectiveness. Policies ensure continuity over time and from staff to staff. In this sense, policies endure. They promote equity and standardization.