The Legal Framework — WHS Regulation 2025 and the Electronic Transactions Act
The starting point for the legal analysis is WHS Regulation 2025 section 299, which sets out the content requirements for a Safe Work Method Statement. The section requires the SWMS to identify the high-risk construction work, specify the hazards and risks, describe the control measures, and describe how the controls will be implemented, monitored, and reviewed. The section also requires the document to be set out in a way that is readily accessible and understandable to the workers who will use it. None of these requirements specifies a format — paper is not mentioned, wet-ink signatures are not mentioned, and physical presence of a document on site is not mentioned.
The absence of a format requirement is the first legal foundation for digital SWMS. Australian WHS regulators and parliamentary drafters consistently avoid prescribing technology in the legislation because technology changes faster than the regulation can be amended. Instead, the regulation specifies the content and the outcomes (accessibility, understandability, worker awareness) and leaves the format to the PCBU. A digital SWMS that meets the content and outcome requirements is as legally valid as a paper SWMS that meets the same requirements.
The Electronic Transactions Act 1999 (Commonwealth) provides the second legal foundation. The Act was passed to remove technology barriers to the use of electronic communications in legal transactions, and it contains general provisions that apply across all Commonwealth legislation unless a specific contrary provision exists. Section 9 provides that a legal requirement for information to be in writing is met by an electronic communication if the information is readily accessible so as to be usable for subsequent reference. A SWMS stored as a file on a computer, phone, or tablet and retrievable on demand meets this requirement directly.
Electronic signatures are covered by section 10 of the same Act. A legal requirement for a signature is met by an electronic method if the method identifies the person and indicates their intention with respect to the information, and the method is reliable as is appropriate for the purpose, and the person to whom the signature is given consents to the electronic method. An electronic sign-on that records the worker's name, the date and time, and the specific version of the SWMS acknowledged meets all three criteria and produces clearer evidence of intention than an illegible scrawl on a paper sheet.
Each Australian state and territory has enacted equivalent legislation that mirrors the Commonwealth Act and applies to state laws: Electronic Transactions Act 2000 (NSW), Electronic Transactions (Victoria) Act 2000, Electronic Transactions (Queensland) Act 2001, and equivalent Acts in WA, SA, TAS, ACT, and NT. The legal position is consistent nationally. A digital SWMS prepared under one jurisdiction's WHS Regulation and signed electronically by workers is valid under that jurisdiction's Electronic Transactions Act and is legally equivalent to a paper document with handwritten signatures.
The Readily Available Requirement and How Digital Meets It
Section 299(3) of WHS Regulation 2025 requires the SWMS to be set out and expressed in a way that is readily accessible and understandable to the persons who use it. Section 299(4) requires a copy of the SWMS to be kept and be available at the workplace until the HRCW is completed. These requirements are frequently cited as reasons why paper SWMS are preferred, on the assumption that a printed document in the site office is more readily available than a digital document on a phone. In practice, the opposite is usually true.
A paper SWMS in a filing cabinet in the site office 200 metres from the work face is not readily available to the worker who is performing the HRCW. The worker would need to stop work, walk to the office, locate the correct document in the filing system, read the relevant section, and return to the work area. This is not a practical workflow and rarely happens in reality. A paper SWMS is typically consulted at the pre-start meeting and then ignored for the rest of the day, which means the readily available requirement is satisfied only at a single point in time rather than continuously.
A digital SWMS on the worker's phone or tablet is readily available at any moment during the HRCW. The worker can pull up the document in seconds, check a specific control, or refer to the emergency procedures without leaving the work area. This is the literal meaning of readily available, and it is what regulators want to see when they assess whether a PCBU has discharged the accessibility obligation.
The same logic applies to inspectors. A SafeWork inspector arriving on site asks to see the current SWMS for the observable work. On a paper workflow, the supervisor walks to the office, searches through folders, and produces a document that may or may not be the current version. On a digital workflow, the supervisor opens the document on a phone or tablet and shows it to the inspector within seconds. The digital workflow is faster, more reliable, and produces a better impression of the contractor's safety management system.
The readily available requirement is also the basis for several regulator comments endorsing digital SWMS. SafeWork NSW's Construction Work Code of Practice explicitly acknowledges electronic SWMS and notes that the key requirement is accessibility to workers, which digital formats typically meet more effectively than paper. WorkSafe Victoria has published guidance confirming that copies of SWMS can be kept in electronic format under OHS Regulation 2017. WorkSafe ACT, SafeWork SA, WorkSafe Tasmania, WorkSafe WA, and WHSQ all accept digital SWMS during inspections, and Comcare supports digital documentation on Commonwealth workplaces.
Electronic Signatures and the Worker Sign-On Requirement
The worker sign-on requirement for SWMS comes from WHS Regulation 2025 section 299, which requires workers to be made aware of the SWMS content before commencing HRCW. In practice, this is implemented through a sign-on record that evidences the worker's acknowledgement of the document. The regulation does not prescribe the method of sign-on, which means paper signatures, electronic signatures, and any other reliable method of capturing acknowledgement are all acceptable.
Electronic signatures for sign-on purposes are covered by section 10 of the Electronic Transactions Act 1999 (Cth) and the equivalent state provisions. The three criteria for a valid electronic signature are identification of the person, indication of intention, and reliability appropriate to the purpose. An electronic sign-on can meet all three criteria directly. The worker's name is captured as they enter it on the sign-on form, identifying the person. The act of confirming the sign-on indicates intention to acknowledge the SWMS. The date, the time, and the record of which version of the SWMS was acknowledged make the record reliable for the purpose of WHS compliance evidence.
The evidentiary quality of electronic signatures is arguably higher than handwritten signatures for SWMS purposes. A paper sign-on sheet shows a name (often illegible) and a signature (often a scrawl), with a date added separately and no time or device information. There is no automatic verification that the person who signed the sheet was actually the worker named, no tamper-evident audit trail, and no way to verify the time of signing. A supervisor who retroactively adds workers to a paper sign-on sheet is not easily detected.
A digital sign-on record, by contrast, captures the name as typed, the date and time, and the specific version of the SWMS acknowledged. This clarity matters in enforcement action, incident investigation, and civil claims, where the question of whether a specific worker was inducted on a specific SWMS version at a specific time can be decisive.
Electronic signatures are also covered by the Evidence Act in each jurisdiction for admissibility purposes. An electronic sign-on record is admissible as evidence in Australian courts, and the court will assess its reliability based on the same criteria as any electronic record: the integrity of the system that produced it, the audit trail supporting it, and the contextual evidence of how it was created and maintained. Properly designed SWMS platforms produce sign-on records that meet or exceed the evidentiary standards courts apply to paper records, and the admissibility is rarely disputed in practice.