How to Prove You Delivered Services When There’s No Written Contract

You finished the job. The client used your work. Now they refuse to pay — and there is no signed contract.

Tradies, consultants, designers, developers, and service providers across Australia work on verbal agreements, email confirmations, or a handshake. When payment does not arrive, the question becomes: how do you prove the agreement existed and that you delivered what was promised?

Verbal Contracts Are Legally Binding

A verbal agreement is typically enforceable if it meets the basic requirements: offer, acceptance, consideration, and intention to create legal relations. The absence of a written contract does not mean there was no contract.

The challenge is proof. In a tribunal, the burden is on you to demonstrate that the agreement existed and that you performed the work. You need to reconstruct the deal using whatever evidence you have.

Most small claims tribunals and courts across Australia — VCAT, QCAT, the Local Court in New South Wales, and others — hear disputes involving verbal contracts regularly. To bring the claim, you need to show that both parties understood the terms and that you delivered.

Types of Evidence That Prove Services Were Delivered

The strongest cases combine multiple types of evidence. Tribunals do not expect perfection — they expect a credible story backed by records.

Invoices and Quotes

An invoice shows what you charged, when you invoiced, and what services you provided. Even if the client never paid, the invoice demonstrates that you believed an agreement existed and that you completed the work.

A quote sent before the work started is equally valuable. It shows the scope, the price, and the client’s acceptance if they responded agreeing to proceed.

Text Messages, Emails, and WhatsApp

Any written communication that references the work, the price, or the agreement is evidence. This includes initial discussions, confirmation that you would start, updates during the project, requests for payment, and the client acknowledging the work was done.

Screenshots are acceptable in tribunal proceedings. Make sure they show the sender, recipient, date, and full conversation context. Do not crop in a way that removes relevant information.

Bank Statements and Payment Records

If the client paid a deposit, made partial payments, or transferred money for materials, those transactions prove the agreement existed. Bank records are objective evidence that both parties acted as though a contract was in place.

Even small payments matter. A $200 deposit on a $2,000 job shows the client committed to the arrangement.

Photos and Videos of the Completed Work

Visual proof that you delivered the services is critical. Take photos or videos of the finished work before you hand it over or leave the site. If the work was digital, save screenshots or export the final files with metadata showing the creation date.

For physical work — renovations, landscaping, repairs — take before-and-after photos. If the client is using the work or has taken possession of it, that strengthens your case.

Witness Statements

Anyone who saw you do the work, heard the client discuss the agreement, or was present when terms were agreed can provide a witness statement. This includes employees or subcontractors who worked with you, suppliers who delivered materials to the job, the client’s staff or family members who were present, or other professionals on site.

A witness statement is a signed and dated account in the witness’s own words. Check whether your tribunal or court asks for it to be sworn as an affidavit. It must include the witness’s full name, address, and a clear account of what they saw or heard. The witness does not need to appear in person at the hearing unless the other party disputes their evidence.

Timesheets and Job Records

If you tracked hours, kept a job diary, or logged site visits, those records show you performed the work. Even rough notes on your phone or in a notebook can be used if they are contemporaneous — meaning you made them at the time, not after the dispute started.

Third-Party Records

Sometimes external records support your case: supplier invoices showing materials purchased for the client’s job, subcontractor invoices for work done on the project, permit or inspection records if the work required council approval, or delivery receipts showing goods sent to the client’s address.

These records are harder to dispute because they come from independent sources.

What You Need to Show

The tribunal will assess your evidence against three questions:

Was there an agreement? Did both parties understand that you would provide services in exchange for payment? Your evidence must show mutual understanding, even if the terms were informal.

What were the terms? What work would you do, and what would you be paid? The more specific your evidence, the stronger your case.

Did you deliver? Can you prove you completed the agreed services to an acceptable standard? Photos, invoices, and witness statements are the best proof.

If the client claims the work was defective or incomplete, you need evidence that contradicts that. Photos showing finished work, messages from the client thanking you, or proof they used the work all help.

Common Mistakes That Weaken Your Case

Waiting too long to gather evidence. Memories fade. Messages get deleted. Witnesses move on. Collect everything immediately after the dispute arises.

Relying on one type of evidence. An invoice alone is not enough if the client denies agreeing to the work. Combine invoices with messages, photos, and witness statements.

Inconsistent stories. If your invoice says one thing and your witness statement says another, the tribunal will question your credibility. Make sure all your evidence aligns.

No contemporaneous records. Evidence created after the dispute started is less persuasive. Evidence created at the time — invoices, messages, photos — is stronger.

Ignoring the client’s version. If the client claims they never agreed to the work or that you did not finish, you need evidence that directly contradicts their story.

How to Organise Your Evidence for Tribunal

Tribunals expect evidence to be presented clearly. Do not dump a pile of unsorted documents and expect the member to figure it out.

Create a timeline. List every key event in chronological order: initial contact, quote sent, work started, work completed, invoice sent, payment due, payment demanded.

Label every document. Use a simple numbering system: Exhibit A, Exhibit B, etc. Each exhibit should have a cover sheet explaining what it is and why it matters.

Write a brief summary. One or two pages explaining your case in plain language. Reference the exhibits as you go.

Prepare a witness statement for yourself. Even if you are the applicant, you are also a witness. Write a signed and dated statement setting out the facts as you know them.

If you have other witnesses, prepare their statements in the same format. Each witness should address specific facts they observed, not opinions or assumptions.

What Happens If You Cannot Prove the Agreement

If you genuinely have no evidence — no messages, no invoices, no witnesses, no photos — your case is weak. Tribunals will not award damages based on your word alone, especially if the other party denies everything.

In that situation, you have two options: negotiate a reduced settlement, or accept that the claim may fail. Some clients will settle for a lower amount rather than defend a tribunal hearing, even if your evidence is thin.

The lesson is clear: always document your work. Send quotes. Issue invoices. Keep messages. Take photos.

How Claim Done Helps You Prepare Evidence

Claim Done’s Witness Statement service generates a witness statement based on the evidence you describe (in New South Wales, an outline you complete in your own words). You provide the facts, our Programmatic Algorithms structure them into a clear document for you to check and sign (for a court, it is set out to be sworn before an authorised witness such as a JP).

The service is designed for this situation: you have the evidence, but you need it presented in a way that tribunals expect. Tell us about your invoices, messages, photos, and notes, and Claim Done drafts a witness statement that ties everything together. Fixed fee, and you review it before you file.

Start your witness statement now at claimdone.com.au/services/witness-statement and turn your evidence into a document the tribunal can rely on.

Frequently Asked Questions

Can I sue someone for unpaid services if there was no written contract?

Yes. Verbal contracts are typically enforceable in Australia. You need to prove the agreement existed, the terms were understood, and you delivered the services. Evidence like invoices, messages, photos, and witness statements can establish your case.

What is the best evidence to prove I completed the work?

A combination of invoices, photos or videos of the finished work, messages from the client acknowledging completion, and witness statements from people who saw you do the work. Multiple types of evidence are stronger than relying on one document.

How do I prove the client agreed to pay me if we only discussed it verbally?

Look for any written confirmation: text messages, emails, or even social media messages where the client discussed the job, the price, or the timeline. If the client paid a deposit or made partial payments, bank records prove they accepted the agreement.

Can I use text messages as evidence in tribunal?

Yes. Text messages, WhatsApp chats, and emails are admissible evidence in Australian tribunals. Take screenshots showing the full conversation, including sender, recipient, and date. Do not edit or crop in a way that removes context.

What if the client claims the work was defective or incomplete?

You need evidence that contradicts their claim. Photos showing the finished work, messages from the client thanking you or confirming completion, proof they used the work, or witness statements from people who inspected the job all help defend against defect allegations.