Almost every regulated firm has written supervisory procedures. Far fewer have written supervisory procedures that match what the firm actually does, and that gap is one of the most common findings an examiner writes up.
WSPs fail examination not because they are missing but because they are aspirational. A firm buys a template, files it, and then operates differently, and now there are two versions of the firm: the one on paper and the one that exists. An examiner tests the distance between them. When the procedures say one person reviews every trade and in practice no one does, the finding is not a missing document. It is a supervisory system that does not work, which is a far worse place to be.
Procedures that hold up share three traits. They are specific, describing what is actually done rather than restating the rule. They are assigned, naming who is responsible for each control rather than leaving it to the firm in the abstract. And they are followed, which means they are written to describe reality and updated when reality changes. A short WSP that is true beats a comprehensive one that is fiction, every time.
The reason WSPs drift is that firms treat them as a document to be created once rather than a description to be maintained. The business changes, a new product launches, a person leaves, and the procedures quietly fall out of date until an exam surfaces the gap. The fix is unglamorous: review them on a schedule, update them when the business moves, and make sure the person named in a procedure knows they are named.
This is general information from a compliance consultancy, not a law firm, and not legal advice. We help firms close the gap between the WSPs and the operation, from the examiner's side of the table.
A short procedure that is true beats a long one that is fiction.