New York's enforcement toolkit lives in CPLR Article 52. Here's the playbook, in order.
An information subpoena (CPLR 5224) compels banks, employers, and the debtor to disclose assets under oath.
A restraining notice (CPLR 5222) freezes accounts; a levy via marshal or sheriff (CPLR 5232) collects from banks; an income execution (CPLR 5231) takes up to 10% of wages; liens reach real property.
Judgments last 20 years; property liens 10 (renewable). Certain funds (Social Security, a protected bank minimum, most of a paycheck) are exempt.
With an information subpoena to locate assets, unless you already know where they bank or work.
Up to 10% of gross wages via an income execution, within statutory limits.
Not required, but enforcement is procedural and easy to botch. NY matters can go on contingency here.