Projects request template

Work completion certificate signing request template

A work completion certificate confirms that contracted work has been finished to the agreed standard and is accepted by the customer or site contact.

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What is a work completion certificate?

A work completion certificate is the document that formally closes out a job. It states that the work has been carried out, identifies what was done, and captures the customer's confirmation that it is complete and accepted. For trades, contractors and service providers it is the cleanest way to mark the moment a job moves from in-progress to done.

A signed completion certificate matters for both payment and accountability. It gives the provider dated evidence that the customer accepted the work, which supports final invoicing and helps if a dispute or warranty question arises later. For the customer, signing is the point to confirm they are satisfied before final payment, so the certificate protects both sides at handover.

When to use a work completion certificate

Handing over a completed job to a customer or site contact
Confirming acceptance before issuing a final invoice
Closing out a service, installation or maintenance visit
Recording sign-off at practical completion on a contracted job

What to include in a work completion certificate

Job description: what work was carried out and where.
Completion date: when the work was finished and handed over.
Acceptance statement: confirmation the work meets the agreed standard.
Outstanding items: any agreed snags or follow-up, if applicable.
Signer details: the customer or site contact authorised to accept the work.

Pros and cons of sending a work completion certificate as a signing request

Pros

Captures dated customer acceptance to support final invoicing
Tracking shows whether the customer opened and reviewed the certificate
Expiry keeps handover prompt while the job is fresh in mind
The receipt is useful evidence if a warranty question arises later

Cons and things to watch

Acceptance does not override warranty or statutory consumer rights
Unrecorded snags can still cause disputes after sign-off
It confirms acceptance, not that payment will follow on time
A signing tool cannot verify the work itself was done correctly

How to send a work completion certificate with Cosign

Upload the completion certificate and preview it so the job description and completion date read correctly.
Add the customer or site contact who can confirm the work is complete as the signer.
Set an expiry of around 7 days for a prompt handover, and add a password if details are sensitive.
Send the private link, track the open, preview and signature, then keep the receipt against the job record.

Work completion certificate request details

Email subject

Work completion certificate

Default message

Please review and sign this completion certificate to confirm the work is complete.

Signer setup

Customer or site contact

Suggested expiry

7 days

Button label

Sign completion certificate

Best fit

Projects teams

Work completion certificate FAQs

Is an electronically signed completion certificate valid in Australia?

Electronic signatures are generally recognised under Australian electronic transactions legislation where the signer consents and can be reliably identified. A signed completion certificate is commonly used as evidence of acceptance, but this is general information, not legal advice.

Does signing a completion certificate waive the customer's rights?

No. Acceptance confirms the customer agrees the work is complete, but it does not override Australian Consumer Law guarantees or any warranty you provide. For specific situations, check with a qualified adviser.

Is the completion certificate kept private?

Yes. Cosign sends it as a private link to the customer or site contact only, and the page is not indexed by search engines. You can add a password if the job details are sensitive.

Can I get the certificate signed on site?

Yes. Because Cosign sends a private link, the customer can open and sign it on their own phone or device at handover, and you can watch the status update in real time.

What if the customer will not sign at completion?

You can send a reminder, and if they decline, Cosign records that status. The tracked opens and previews also show whether they reviewed the certificate, which is useful if the job is later queried.