Small Claims a person can sue another person or a business. Do you need a lawyer to bring a Commercial Small Claim?No. You do not have to have a lawyer to file a Commercial Small Claims case. Bar Association Referral Services: Contact the Nassau County Bar Association or the Suffolk County Bar Association. Instructions for Filing Emergency Applications : The Clerk's Office in Brooklyn and Central Islip are open to the public from a.m. You may contact the other side(s) and jointly fill out a. Submission to Arbitration, which can be found on our website. The Suffolk County Bar Association is the New York State approved body for reviewing and resolving Attorney-Client Fee Disputes.