What this is
What is a subcontractor declaration?
What is a subcontractor declaration?
A subcontractor declaration is a statement, made by the main contractor before work starts, of every subcontractor and every agency or casual worker it intends to use, what work each will do, and whether each has been prequalified and inducted to the same standard the main contractor was held to. It exists because a contractor's own vetting says nothing about the people it subcontracts to.
Who has to submit a subcontractor declaration?
The main contractor, as a condition of the award. It is not something the site raises about the contractor; it is something the contractor discloses about itself, which is why the honesty of the declaration is only as good as the consequence attached to getting it wrong.
What happens if an undeclared subcontractor turns up?
It should trigger a defined consequence, not a note in a file. Most contracts allow for a warning on first occurrence and suspension or termination on repetition, and the point of naming the consequence in advance is that it removes the argument about whether it applies once the event has actually happened.
Scope
When is a subcontractor declaration required?
This record captures who the contractor is bringing, not whether they should be allowed to. Using it as a substitute for actually checking that evidence turns the declaration into paperwork.
Use this template when
- A contractor is about to start work and subcontractors or agency labour will be involved
- The set of subcontractors a contractor uses has changed since the last declaration
- A contract or site rule requires disclosure of any second-tier subcontracting before it happens
- Agency or casual labour is being introduced and needs the same visibility as a named subcontractor
- An audit or incident has raised the question of who was actually on site doing the work
Do not use it for
- Contractor Prequalification Questionnaire, which collects the main contractor's own safety, insurance and performance information, not what it discloses about others.
- Contractor Worker Register, the name-by-name log of individuals on site, not the declaration of which organisations they belong to.
- Site Access Authorization, which grants physical access once a person or crew is already known and cleared.
- Subcontractor Verification Audit, the independent check that what this declaration says is actually true, rather than the declaration itself.
- Insurance Certificate Record, which holds the certificates this declaration only asks whether they exist.
Compliance mapping
Which ISO 45001 cl.8.1.4 requirements does this satisfy?
ISO 45001 treats contracted work as something the organisation must control regardless of who employs the people doing it, which is why a declaration of who those people actually are sits underneath most of clause 8.1.4.
| Clause | Requirement | Where it lands |
|---|---|---|
| ISO 45001 cl.8.1.4.2 | Coordination with contractors to identify hazards and control OH&S risks arising from contracted activities | Subcontractors declared |
| ISO 45001 cl.8.1.4.3 | Control of outsourced functions and processes so they do not adversely affect intended OH&S outcomes | Subcontractors declared |
| ISO 45001 cl.5.4 | Consultation and participation extending to relevant interested parties, including contracted workers | Declaration |
| ISO 45001 cl.6.1.2.1 | Hazard identification proactive and ongoing, covering people whose work is influenced by the organisation | Header |
| ISO 45001 cl.7.4 | Communication of relevant OH&S information to and from external providers and interested parties | Declaration |
| ISO 45001 cl.8.1.1 | Establishing operational controls to meet OH&S requirements, applied to contracted and outsourced work | Agency and casual labour |
| ISO 45001 cl.10.2 | Reaction to nonconformity, including corrective action to eliminate the cause and prevent recurrence | Declaration |
What it does not cover
- Contractor Prequalification Questionnaire, which is the underlying evidence check this declaration only asks whether has happened.
- Contractor Worker Register, the named, individual-level record of who is actually on site, which a subcontractor entry does not replace.
- Site Access Authorization, the physical control that admits a person once their organisation has been declared and cleared.
- Subcontractor Verification Audit, the independent check that the claims made here, prequalification, insurance, competency, are actually true.
- Insurance Certificate Record, which holds the document itself rather than a yes or no about its existence.
Global
Subcontractor Declaration requirements by country
No jurisdiction legislates a subcontractor declaration by that name. What differs is how firmly the duty to know who is doing contracted work is attached to the party at the top of the chain.
OSHA multi-employer worksite policy (CPL 02-00-124)
A controlling employer can be cited for hazards created by a subcontractor it did not adequately oversee, even without direct exposure.
The absence of a declaration does not remove liability; it removes the evidence that oversight was attempted.
HSE guidance on managing contractors (INDG368) and MHSWR reg.3
The client and main contractor are expected to satisfy themselves as to the competence of anyone engaged to do the work, including subcontractors.
A declaration that is never checked against evidence does not discharge this duty; it only documents that the question was asked.
ISO 45001 cl.8.1.4
Organisations must coordinate with contractors and control outsourced processes regardless of the contractual layer at which the work sits.
Certification auditors trace second-tier subcontracting specifically, because it is the layer most systems fail to see.
How to complete it
How to complete a subcontractor declaration, step by step
The form asks whether subcontractors exist and whether they were checked. The parts that decide whether the answer means anything are the ones underneath those questions.
A subcontractor's own subcontractor is where most declarations stop looking, since the field asks about direct arrangements and the second tier is invisible unless someone asks specifically. Treat 'second tier subcontracting: yes' as the most important answer on the form, not a footnote.
A main contractor claiming it prequalified its own subcontractor is reporting on its own homework. Where the evidence field says claimed only or none, treat the declaration as incomplete, because that gap is exactly what the record exists to catch.
Agency workers are often assumed competent because the agency is a known, reputable supplier. That assumption is rarely tested, and a declaration that skips competency verification for agency labour leaves the least-vetted people on site unchecked.
The consequence applied field only means something if it is used. A programme that records the finding but never applies the warning, suspension or termination it names teaches contractors that declaring is optional.
What auditors find
Most common subcontractor declaration findings
The declaration nearly always exists on paper. The findings are about whether it reflects who was actually there, and what happened when it turned out not to.
| Finding | Clause | What fixes it |
|---|---|---|
| Subcontractor engaged and working before any declaration was submitted or approved. | ISO 45001 cl.8.1.4.2 | Make declaration and approval a condition precedent to site access, checked at the gate. |
| Prequalification recorded as complete with no supporting evidence held. | ISO 45001 cl.8.1.4.2 | Require a document reference for prequalification claims; treat unevidenced claims as not prequalified. |
| Second-tier subcontracting present on site but not disclosed in the declaration. | ISO 45001 cl.8.1.4.3 | Ask the second-tier question directly at declaration and again at audit. |
| Agency or casual labour used without competency verification or induction equivalent to named subcontractors. | ISO 45001 cl.8.1.1 | Apply the same induction and competency check to agency labour, regardless of supplier reputation. |
| Declaration not updated when the subcontractor set changed during the contract. | ISO 45001 cl.7.4 | State the obligation to notify changes as a contract term, confirmed in the declaration itself. |
| Undeclared subcontractor found later, with no consequence recorded or applied. | ISO 45001 cl.10.2 | Apply the stated consequence at the point of finding, and record it against the contractor's approval status. |
Case in point
Case in point: the crew that was never on the form
A facilities contractor declared two of its own employees for a roof repair. On the day, the two arrived with a third person described afterwards as 'helping out', engaged the previous evening from a subcontractor used occasionally for overflow work. Nobody asked who the third person was, because the declaration on file named two individuals and the gate check counted heads rather than names.
The third person fell from a ladder and was seriously injured. He had no site induction, was not on the worker register, and his employer had never been prequalified. The main contractor's defence was that the work had not changed, only its labour source had, quietly, without the declaration being touched. The corrective action was not a better form; it was making the obligation to notify a change in labour source explicit and checked at every gate entry, not assumed from paperwork filed at contract start.
The template
The template, field by field
The form exactly as it installs. Every field, option, score and conditional rule is editable, and the links to other templates come with it.
4 sections
- Reference
- CON-006
- Archetype
- Record
- Record ID
- SUBD-2026-000
- Scoring
- Not scored
- Direction
- n/a
- Singleton
- No
- Basis
- ISO 45001 cl.8.1.4
- Links
- Links Vendor
- Tags
- Contractor, Assurance
- Sections
- 4
- Fields
- 42
- Follow up fields
- 3
- Repeating sections
- 1
- Links out
- 3
Header
12 fieldsDeclaration ID*
Auto sequence. Format SUB-2026-000.
The record's own ID. Other templates point at this value.
Status*
Drives who this goes to next.
- Planned2 pts
- In progress2 pts
- Complete3 pts
- Deferred0 pts
- Open0 pts
- Closed3 pts
- Overdue0 pts
Date and Time*
Completed By*
Site*
Site ID*
Format SITE-000.
Links to FDN-001 Site ID
Contractor*
Vendor ID*
Format VEN-0000.
Links to FDN-005 Vendor ID
Undeclared Subcontractors Are The Gap
Most contractor management systems check the main contractor thoroughly and never see the two people they brought in for the day. Those two are the ones most likely to get hurt.
Subcontractors Used*
- No3 pts
- Yes1 pt
Declaration Covers This Scope*
- Yes3 pts
- Partly1 pt
- No0 pts
Our Prior Approval Required*
- Yes3 pts
- No1 pt
Subcontractors declared
Repeats12 fieldsSubcontractor Name*
Work They Will Do*
Workers On Site*
Prequalified By Main Contractor*
- Yes3 pts
- Partly1 pt
- No0 pts
Evidence Of Their Checks*
- Yes3 pts
- Claimed only1 pt
- None0 pts
Prequalified By Us*
- Yes3 pts
- Not required2 pts
- No0 pts
Insurance Verified*
- Yes3 pts
- Partly1 pt
- No0 pts
Competency Evidence Held*
- Yes3 pts
- Partly1 pt
- No0 pts
Will Be Inducted Separately*
- Yes3 pts
- No0 pts
Supervised By Main Contractor*
- Yes, on site3 pts
- Remotely1 pt
- No0 pts
Second Tier Subcontracting*
Subcontractors of subcontractors are where the chain of responsibility usually breaks entirely.
- No3 pts
- Yes0 pts
Approved*
- Yes3 pts
- With conditions2 pts
- No0 pts
Agency and casual labour
5 fieldsAgency Labour Used*
- No3 pts
- Yes1 pt
Agency Named
Agency Workers Inducted Same As Others
- Yes3 pts
- No0 pts
Competency Verified For Agency Workers
Agency tickets are the most commonly assumed and least commonly verified.
- Yes, by us4 pts
- By the agency2 pts
- No0 pts
Who Supervises Them
Declaration
13 fieldsDeclaration Complete And Accurate*
- Yes3 pts
- Partly1 pt
- No0 pts
Undeclared Subcontractor Found Later
- No3 pts
- Yes0 pts
Consequence Applied
Obligation To Notify Changes Explained*
- Yes3 pts
- No0 pts
Review Date*
Action Required*
Raise the action record, then enter its reference here.
- No2 pts
- Yes0 pts
Priority
- High0 pts
- Medium1 pt
- Low3 pts
CAPA ID
Format CAPA-2026-00000.
Links to FDN-014 CAPA ID
Action Owner
Contract Owner*
Signature*
Contractor Representative*
Second Signature*
CON-006 · record IDs look like SUBD-2026-000 · Links Vendor
Open in KnowellaRun it with agents
From a document you fill in to a programme that runs itself
The declaration is a self-report. What fails around it is the check that turns the self-report into something verified, and the update that never reaches the site once the crew has changed.
Holds the declaration against the vendor register and the worker register, and flags a gap where a named subcontractor has no corresponding prequalification or worker entry.
Feeds second-tier subcontracting and agency labour findings into the site's hazard register rather than leaving them isolated in the declaration.
Confirms induction and competency records actually exist for every subcontractor and agency worker the declaration says was checked.
Watches for a subcontractor or agency worker appearing in site or incident records with no matching declaration, and raises it before the audit does.
This template lives in KnowContractor — contractor management. Prequalification, approval, induction, permits and performance.
Meet KnowContractor→Glossary
Subcontractor Declaration definitions and key terms
- Subcontractor
- An organisation engaged by the main contractor to perform part of the contracted work, rather than by the site directly.
- Second-tier subcontracting
- A subcontractor engaging its own subcontractor, one further step removed from the party the site actually approved.
- Prequalification
- The check of a contractor's or subcontractor's safety, insurance, training and performance record before it is approved to work.
- Agency labour
- Workers supplied by a staffing agency rather than employed directly by the contractor, often assumed to be pre-checked and rarely verified.
- Obligation to notify
- The contractual requirement that a contractor disclose a change in the subcontractors or labour it uses, rather than waiting to be asked.
FAQ
Frequently asked questions about subcontractor declaration
Does a subcontractor declaration need to be resubmitted if nothing changes?+
Not necessarily, but treat the review date as a backstop, not the primary control. The obligation to notify a change matters more than a scheduled resubmission, because most declarations go wrong between reviews, not on the review date itself.
Who verifies what the contractor declares?+
The site or the contract owner, not the declaration alone. A Subcontractor Verification Audit exists because a self-reported declaration cannot verify itself, and higher-risk work should get that independent check rather than the contractor's word.
Is agency labour the same as a subcontractor for this purpose?+
Functionally, yes. Both put someone on site who was not checked by the site's own vetting process. Treating agency labour as lower risk because it comes through a named agency is an assumption, not a finding.
What if a contractor refuses to declare a subcontractor it is clearly using?+
That is itself the finding. Undeclared use should carry a stated consequence, warning, suspension or termination, named in advance so it is not negotiated after the fact.
Does second-tier subcontracting need separate approval?+
It should, and most declarations that omit a specific question about it never surface the issue. Second-tier subcontractors are usually smaller, less resourced, and doing work the main contractor itself subcontracted out.
Does the declaration replace checking insurance and competency evidence?+
No. It records that insurance and competency were checked, and by whom, but the evidence itself belongs in the insurance certificate and competency verification records.
Keep going
Related templates and programmes
Industries this is written for
Programmes this belongs to
Used together in Contractor Onboarding and Management
Contractor Prequalification Questionnaire
Collects a contractor's safety, insurance, training and performance information before they are approved
Contractor Safety Statistics Review
Reviews a contractor's injury rates, citations and experience modifier over recent years
Contractor Risk Classification
Classifies a contractor by the risk of the work they do, from low risk services to high risk construction
Contractor Approval Record
Records the decision to approve a contractor to work on site
Contractor Safety Program Review
Reviews the contractor's own written safety programme against your requirements
Prequalification Renewal Record
Renews a contractor's prequalification before it expires
More in Prequalification
Contractor Prequalification Questionnaire
Collects a contractor's safety, insurance, training and performance information before they are approved
Contractor Safety Statistics Review
Reviews a contractor's injury rates, citations and experience modifier over recent years
Contractor Risk Classification
Classifies a contractor by the risk of the work they do, from low risk services to high risk construction
Contractor Approval Record
Records the decision to approve a contractor to work on site
Contractor Safety Program Review
Reviews the contractor's own written safety programme against your requirements
Prequalification Renewal Record
Renews a contractor's prequalification before it expires
Written and reviewed by
Siddarth Singh
Founder & Chief Executive Officer, Knowella
Certified Safety Professional and industrial and systems engineer with more than a decade inside food supply chain, freight and manufacturing operations. This page was written against the current text of the standards it cites, not against secondary summaries of them.
- Certified Safety Professional (CSP), Board of Certified Safety Professionals
- MBA, University of Chicago Booth School of Business
- MS and BS, The Ohio State University, Industrial and Systems Engineering
- Six Sigma Black Belt
Sources and last review. Reviewed 16 August 2026 against:
- ISO 45001:2018 clauses 8.1.4, 5.4 and 7.4
- HSE INDG368 — Managing contractors: a guide for employers
- OSHA CPL 02-00-124 — Multi-Employer Citation Policy
- Management of Health and Safety at Work Regulations 1999, regulation 3 (GB)
This page is general guidance, not legal advice. Confirm requirements with your jurisdiction’s regulator.