How to Prepare Evidence for Arbitration

Arbitration is decided on the record. An arbitrator can only weigh what you actually submit — your statements, your documents, and how clearly they connect to what you are claiming. Good preparation does not mean filing everything you have. It means choosing the right evidence, organizing it in order, and explaining why each item matters.

Start With What You Are Trying to Prove

Before you collect files, write down your claims in plain sentences. What agreement was made? What was supposed to happen? What went wrong? What are you asking for, and how did you arrive at that figure?

Each claim should point to evidence. If you say a contractor agreed to finish work by a certain date for a certain price, the signed contract or written messages confirming that are the evidence. If you say you paid, an invoice marked paid, a receipt, or a payment record is the evidence. If you say the work was incomplete, dated photos may be the evidence.

This claim-by-claim approach keeps you from filing a large, unfocused bundle and hoping the arbitrator finds the important parts. Quality and relevance matter more than volume.

The Types of Evidence That Usually Help

Contracts are usually the starting point. Include the full document if you have it, not just the page that favors you, and note the terms you rely on — scope, price, deadlines, cancellation terms, and any arbitration clause.

Invoices, receipts, and payment records show what was charged and what was paid, and they support the amount you claim. If your figures differ from the other side's, a clear payment timeline helps explain why.

Messages and emails often show what was agreed after signing — changes, approvals, complaints, and attempts to fix a problem. Save complete threads with dates visible, rather than isolated screenshots out of context.

Photos and video can be powerful for condition, damage, or completed work, especially when dated. A short description of what each photo shows helps more than a large set of unexplained images.

Timelines and personal notes help organize events, but they are your account, not independent proof. Use them to guide the arbitrator, and be clear about which facts are supported by a document.

Build a Simple Chronology

Arbitrators review many records. A one-page chronology makes yours easier to follow.

List events in date order: when the agreement was made, when work or delivery happened, when payment was made, when the problem was raised, and what each side did next. Next to each event, note the evidence that supports it.

A chronology also helps you spot gaps before you file. If you claim you complained promptly, is there a message showing that? Finding gaps early lets you explain them honestly rather than being caught off guard in rebuttal. Keep the language factual and save argument for your opening statement.

Tie Each Item to a Claim

When you file, do not just upload or link documents with generic names. For each item, give it a clear title, a brief description of what it is, and a sentence about why it matters.

For example: a title naming the contract and its date, a description noting the signed scope and price, and a note that it supports your claim about what was promised. That small effort lets the arbitrator connect evidence to reasoning when writing the award, instead of reconstructing your intent later.

Avoid duplicates, and avoid filing the same document under several titles. If a document supports two claims, say so in its description rather than filing it twice. A clean record is more persuasive than a repetitive one, and it shows respect for the other side's and the arbitrator's time.

How Evidence Works on an On-the-Record Platform

In traditional arbitration, evidence handling depends on the provider's rules and the arbitrator's directions. In mediation, by contrast, parties sometimes share information privately in caucuses.

DecidePlease™ works differently. Everything is on the record: every submission and evidence item is visible to both parties, and there are no private caucuses. Evidence is filed as structured entries — a title, a description, and a link — within a private access-code room shared by both parties.

That structure has practical benefits. You know exactly what the other side has filed, and they know what you have filed. Rebuttals can respond to real documents rather than summaries. The award, whether from an AI Adjudicator, an AI-assisted human arbitrator, or a human arbitrator with no AI screening, is based on that shared written record.

Cases on DecidePlease™ move in rounds — opening statements, rebuttals, an optional questions round, deliberation, and award — and both parties must affirm the arbitration agreement before submissions open. Preparing your evidence before the first round helps you file a complete opening rather than adding key documents late.

If you are getting ready to file, take the time to organize your contracts, payments, messages, and photos into a clear chronology first — then, when you open a case on DecidePlease™, each structured evidence entry will already have a title, description, and purpose ready to go.

FAQ

How much evidence should I submit? Submit what is relevant to prove your claims and respond to the other side's. Quality over volume — a focused, well-labeled set is usually clearer than a large, unexplained bundle.

Should I include evidence that does not fully support my side? Be honest and complete, especially with contracts and message threads. An arbitrator will see the full record on an on-the-record platform, and credibility matters.

What if I do not have a written contract? Gather what you do have — messages, invoices, payment records, photos, and a clear timeline. Explain what agreement you believe was made and what evidence supports it.

General information, not legal advice. Related: how-online-arbitration-works, what-is-an-arbitration-award, arbitration-on-the-record-no-caucuses