When it is appropriate
Use it when the ordinary notice period would defeat the purpose of the relief: an imminent eviction or lockout, a bank account about to be levied, assets being dissipated, a lease about to be terminated, or a default judgment being enforced. Using it for routine relief that could wait for a notice of motion irritates courts and can result in the application being declined.
What the papers must contain
An affidavit setting out the facts and the emergency, the proposed order specifying exactly what relief you want and how the papers will be served, supporting exhibits, and a memorandum where the legal standard requires argument. Be precise in the proposed order — a court will not grant relief you did not clearly request.
Temporary restraining orders
A TRO preserves the status quo until the motion is heard. Expect the court to require notice to the other side before presentation absent a strong showing of why notice itself would cause harm. Courts may also require an undertaking. Overreaching in a TRO request — asking for the entire case as interim relief — is the fastest way to have it cut down or denied.
Service and follow-through
The signed order specifies the manner and deadline for service, and those directions are mandatory. Serve exactly as directed, file proof, and appear on the return date. A perfectly drafted order to show cause served a day late or by the wrong method is worth nothing.