New York Instructions OOS500a is a set of instructions for filing a New York State Order of Support. This document includes instructions for filing an initial Order of Support, as well as instructions for filing a modification or enforcement of an existing Order of Support. Additionally, the document outlines the requirements for filing a Notice of Entry of an Order of Support, as well as a Notice of Termination or Non-Enforcement of an Order of Support. The document contains information on how to determine the appropriate support amount, how to calculate the percentage of income owed, and how to file the Order with the court. The document also contains various forms and worksheets to aid in the filing process. There are two types of New York Instructions OOS500a — one for individuals filing an initial Order of Support, and one for individuals filing a modification or enforcement of an existing Order of Support.