Vendor Subcontracting: Who Is Responsible When Work Is Sublet?
Your contract is with the vendor, not the crew in your lobby. How vendor subcontracting works, what must be disclosed, and where responsibility lands.
When a vendor subcontracts, nothing about your contract changes. You still have one counterparty, one set of obligations and one party to call at 2am. Vendor subcontracting transfers work between the contractor and someone else; it does not transfer responsibility away from the contractor you signed with.
That is the theory, and it is settled. The practical question is harder: do you know who is actually in your building, and can you hold the vendor to a standard when the people doing the work were never named in the agreement?
Key takeaways
- Your counterparty is the vendor. Subcontracting does not dilute the vendor's obligations to you, whatever the vendor arranges downstream.
- Require written disclosure of every subcontractor before it starts work, with a right to object on defined grounds.
- Pass your requirements down: insurance, induction, access, training, reporting and scope limits all follow the work.
- Verify the same documents for the subcontractor that you hold for the vendor, including workplace insurance coverage.
- Score subcontracted work on the same checklist and scale, or your performance data stops being comparable.
- Ask the classification question once: a "subcontractor" controlled like an employee is a risk that lands on someone's books.
What does vendor subcontracting change in your contract?
You contracted with one company. That company owes you the specification, the standard, the insurance and the reporting. Whatever it does to deliver — its own crews, agency labour, a second cleaning company two hours away — is its problem to manage and its obligation to meet.
Two things follow, and both are easy to get wrong.
First, the vendor cannot lower the standard by subletting. If the agreement requires a scored cleanliness level and a monthly report, the subcontractor's output must meet it, and the vendor is answerable when it does not.
Second, your counterparty is the vendor, not the subcontractor. You cannot usually direct a subcontractor's crew, and you should not try — that muddies who is accountable. Raise findings with your vendor, every time, in writing.
A vendor that has quietly subcontracted has also, usually, quietly stopped supervising at the depth you are paying for. The quality control question is the same one covered in cleaning subcontractor management, viewed from the client's side of the desk.
What your contract should require before any subcontractor starts
Put the rules in the agreement while everyone is still friendly. Adding disclosure obligations after a problem is a negotiation you will lose.
| Requirement | What it does | Practical wording |
|---|---|---|
| Written disclosure before work | Gives you a current list of who is on site | "No subcontractor shall perform work at the site without prior written notice." |
| Right to object | Lets you refuse on defined, non-arbitrary grounds | Grounds: lapsed coverage, missing training, prior performance |
| Pass-through of all terms | Extends standard, insurance, reporting and scope limits | "All obligations in this agreement apply equally to any subcontractor." |
| Insurance and clearance evidence | Keeps the risk transfer intact | Certificates before the first shift, renewed on expiry |
| Induction and access rules | Ensures every individual is briefed and recorded | Named individuals, dated induction |
| Notification of change | Tells you when a crew changes mid-contract | Within 24 hours of any removal or replacement |
| Single point of accountability | Keeps your management interface clean | The vendor stays solely responsible for delivery and correction |
Notice what is not on that list: any suggestion that the subcontractor answers to you.
Some contracts restrict subcontracting outright, require prior written approval, or prohibit it for specific tasks such as restroom cleaning or food-contact areas. Read those clauses before the vendor arrives. If your own agreement is silent, that silence is the gap to close at the next renewal.
Disclosure: what to ask for and when
Disclosure is not a one-time onboarding step. Crews change, and a list from two years ago is a historical document.
Ask for, and keep current:
- Legal name and business number of every subcontractor
- The sites and tasks that subcontractor performs for you
- Named workers expected on site, with roles
- Insurance certificate and workplace insurance clearance, checked the same way as the vendor's, which is set out in vendor insurance verification
- Training and induction records for each individual
- The supervision arrangement — who from the vendor visits, how often, and what they check
- A notification obligation for any change, with a 24-hour window
Update the list monthly, and reconcile it against your access register. If someone holds a fob who is not on the current disclosure list, you have found the problem before it found you.
Where the liability actually sits
Managers often ask who is liable when a subcontracted crew damages property or injures someone. Liability is shared according to facts and law, and the contract is what allocates it — which is why the wording matters more than the job title.
Practical positions to hold:
- The vendor is liable to you for the acts of its subcontractors, because that is what you contracted for. Confirm the clause says so.
- The vendor's indemnity should extend to subcontracted work, reviewed by someone qualified to advise you.
- Your insurer will want evidence of coverage for whoever did the work, which means certificates per subcontractor.
- Occupational health and safety duties attach to the workplace, and both the vendor and the building have responsibilities toward the workers on site.
- Worker classification exposure sits with the paying party. A "subcontractor" who is scheduled, directed and paid hourly may in substance be an employee of the vendor.
That last point deserves care, because misclassification is expensive and invisible from the manager's chair. The Canada Revenue Agency sets out the factors it applies — control, tools, financial risk, opportunity for profit, ability to subcontract — in its guidance on employee or self-employed status. You are not the classifier, but you are entitled to ask the vendor how it made the determination.
Not regulatory advice. Worker classification, payroll obligations and workplace insurance coverage vary by jurisdiction and are enforced by the Canada Revenue Agency, provincial labour ministries and provincial workplace safety boards. Confirm your own position with those bodies or a qualified advisor.
Access, induction and the people you never met
The operational risk in vendor subcontracting is not the concept. It is the gap between the crew you approved and the crew that turns up.
Close it with three habits:
- Induct individuals, not companies. Every worker on site gets a dated induction at that building, including a substitute sent for one night. The mechanics are in our vendor induction and site rules guide.
- Issue credentials to named people. A shared fob with no name means no accountability and no way to reconcile the register.
- Reconcile monthly. Compare the disclosed worker list, the induction records and the access register, and chase every discrepancy in writing.
When a new subcontractor is proposed mid-contract, run them through the same onboarding sequence as the original vendor, scaled to the role.
Managing subcontracted work without splitting your standard
The temptation with a subcontracted crew is to inspect harder to compensate. That produces more findings and no better data. Keep the standard identical and make the sampling honest.
- Same checklist, same scoring scale, same critical items across direct and subcontracted crews. A score that means one thing on Monday and another on Tuesday is not a score.
- Inspect subcontracted sites at least as often, not less. Distance from the vendor's supervisor is where quality drifts.
- Photograph critical and high-visibility findings every round, so the correction is not arguable.
- Track repeat findings by location, because a repeat is a supervision gap rather than a bad night.
- Include subcontracted work in the same reporting you give owners or the board.
Where a subcontractor also supplies consumables or equipment, the practical requirements for the workers themselves are covered in our hand protection for cleaning staff note.
| Situation | Who you contact | What you ask for | Timescale |
|---|---|---|---|
| Single failed item in a routine round | Vendor's site supervisor | Correction with a dated photo | Same shift for critical items |
| Repeat finding in the same location | Vendor's operations manager | Cause, not just correction | Within 5 business days |
| Undisclosed worker on site | Vendor's account manager | Written disclosure and evidence before the next shift | Same day |
| Lapsed subcontractor insurance | Vendor's account manager | Renewed certificate, work suspended until filed | Immediately |
| Damage attributed to a subcontracted crew | Vendor's account manager and your insurer contact | Incident report, names, times, evidence | Same day |
The pattern in every row is the same: you talk to the vendor. Never build a parallel management relationship with a subcontractor, however helpful they are.
Scope limits travel down the chain
A subcontractor inherits the boundaries of the work, including the parts nobody may do.
Scope note: Confined space entry, work at height beyond a step stool, electrical work, asbestos disturbance, clinical or sharps waste handling, pest treatment, mould remediation and pool chemical dosing are normally outside a cleaning contractor's scope. Confirm in writing what is included, and report rather than act on anything outside it.
Say it at the induction, print it in the site rules, and repeat it in the subcontractor's own agreement. A worker who knows where the line sits protects themselves, the vendor and the building.
Scope note: Directing a subcontractor's worker, setting their hours, or supplying their tools are behaviours that can create obligations you did not intend. Keep the management relationship at the vendor level.
Frequently asked questions
Is a vendor still responsible if it subcontracts the work?
Yes. Your contract is with the vendor, and the vendor remains accountable for delivering the specification, maintaining insurance and reporting performance, whoever performs the work. Subcontracting changes who holds the mop, not who answers for the result. Make that explicit in the agreement.
Do I have to approve a vendor's subcontractor?
Only if your agreement says so, which is why the clause is worth adding. A right to prior written notice, with the ability to object on defined grounds such as lapsed coverage or missing training, gives you control without turning you into the vendor's operations manager.
What documents should I collect for a subcontractor?
The same set you collected for the vendor: certificate of insurance at the contract minimum, workplace insurance clearance, induction and training records for each individual, access authorisation, and where required, a record check. Keep them in the same register, with the same expiry tracking.
Can I refuse a subcontractor I have not approved?
Yes where the contract reserves that right, and you should exercise it on evidence rather than preference — an expired certificate, an unresolved performance history, or a worker who cannot evidence induction. Record the reason in writing, because a refusal without a documented basis is hard to defend.
Who is liable if a subcontracted worker is injured in my building?
Liability depends on the facts and the law, and both the vendor and the building owner have duties toward workers on the site. What you control is the evidence: current insurance and clearance, documented induction, and a clear record of what the vendor was required to do. Confirm the indemnity position with a qualified advisor.
Keep one counterparty and one record
Vendor subcontracting is normal and often sensible. What is not acceptable is discovering it after an incident. Require disclosure, pass your requirements down the chain, verify the same documents, and hold the vendor to the same standard with the same checklist.
Where this fits in the vendor management process
This is one part of a wider discipline. It sits alongside managing vendors end to end, which sets out how to select, onboard, monitor and renew the contractors a building depends on.
NeatScore keeps the inspection scores, photos and deficiency history for a site in one place, so subcontracted work is measured and documented exactly like the vendor's own. Try it free for 14 days, or see pricing.
