The general contractor has a strong track record. Its financial information is current, the project is within its established range, and the work appears consistent with its experience.
But one subcontractor will perform the most technically demanding part of the contract.
That subcontractor may represent only a portion of the total project value, yet its work could control the schedule, require specialised qualifications, or be difficult to replace.
The contractor may still be well positioned to complete the project. However, the file should explain how this subcontractor risk will be managed before the bond request goes to market.
Why Subcontractor Risk Matters to the Bonding Review
A performance bond supports the contractor’s obligations under the bonded contract. The general contractor remains responsible for delivering the work even when significant portions are assigned to subcontractors.
The Canadian Construction Documents Committee describes the standard CCDC 221 performance bond as guaranteeing the contractor’s performance of the contract. It does not shift the contractor’s overall contractual responsibility to the subcontractor performing a particular work package.
This makes subcontractor selection and management relevant to the contractor bonding review.
The key question is not simply:
How much of the contract is being subcontracted?
A better question is:
How dependent is successful project delivery on this particular subcontractor?
A subcontractor responsible for 15% of the contract could represent a greater operational exposure than one completing 30% if its work is highly specialised, scheduled on the critical path, or difficult to replace.
What Makes a Subcontractor Critical?
A subcontractor may deserve closer attention when it controls an important part of the project.
Examples may include:
- Environmental remediation
- Structural steel
- Mechanical or electrical systems
- Specialised excavation
- Contaminated soil handling
- Major equipment installation
- Complex building-envelope work
- Other licensed or highly technical services
The percentage of the contract matters, but it is only one consideration.
Brokers should also look at:
- The technical importance of the work
- Whether the work affects the critical path
- The availability of qualified replacements
- The contractor’s prior experience with the subcontractor
- The subcontractor’s current workload
- Project-specific licences, insurance, or qualifications
- The financial consequences of delay or replacement
The goal is not to underwrite the subcontractor independently. It is to help explain the contractor’s dependency and management plan.
Questions Brokers Should Ask About Subcontractor Risk
When a major or critical subcontractor is involved, brokers should try to establish the following.
Has the contractor worked with the subcontractor before?
A successful working history can provide useful context.
Ask whether the parties have completed projects of similar size, complexity, and scope together. A contractor may know the subcontractor well, but only from smaller or less demanding assignments.
Is the subcontractor confirmed?
A bid based on an informal quotation or preliminary discussion may carry more uncertainty than one supported by a properly reviewed subcontract proposal.
Useful information can include:
- The subcontracted scope
- The quoted value
- Price validity
- Schedule commitments
- Material responsibilities
- Exclusions or qualifications
- Current status of negotiations
Can the contractor manage the work if problems arise?
Subcontracting the work does not eliminate the contractor’s exposure if the subcontractor cannot perform.
The broker should understand whether the contractor has:
- Alternative subcontractors
- Internal technical expertise
- Replacement cost contingency
- Schedule flexibility
- Strong project-management oversight
- A plan for long-lead materials or equipment
A credible contingency plan is especially important when qualified replacements are limited.
Does the subcontractor need to provide security?
Depending on the project, subcontract value, contractual requirements, and underwriting review, subcontract security may be considered.
This could include a subcontract performance bond, a labour and material payment bond, or another form of protection acceptable to the relevant parties. The Surety Association of Canada notes that subcontractors may themselves be required to provide contract bonds.
Whether subcontract bonding is appropriate should be assessed individually. It should not be presented as an automatic requirement for every large subcontract.
How to Present the Exposure Clearly
A strong submission should not merely state that part of the project will be subcontracted.
It should explain why the selected subcontractor is appropriate and how the general contractor will oversee the work.
For example:
The mechanical package represents approximately 20% of the contract and is central to the completion schedule. The contractor has completed three similar projects with the proposed subcontractor, has reviewed its current capacity, and has identified an alternative firm if replacement becomes necessary.
That explanation is more useful than listing the subcontractor’s name and contract value without context.
The review may also benefit from the subcontractor’s qualifications, relevant experience, insurance information, scope details, and proposed security where applicable.
Subcontractor Risk Is Not Automatically a Red Flag
Using subcontractors is a normal and necessary part of construction delivery.
A significant subcontract does not automatically make the bonding file weaker. In many cases, engaging a specialised firm is the most responsible way to deliver the work.
The concern arises when the contractor depends heavily on a subcontractor but cannot explain:
- Why the firm was selected
- Whether it has performed similar work
- How its capacity was assessed
- How the work will be supervised
- What happens if it cannot complete its obligations
The better the contractor understands that dependency, the easier it is to present the project coherently.
Broker Takeaway
Do not evaluate a critical subcontractor by percentage alone.
Review its role in the project, the contractor’s experience with the firm, the difficulty of replacing it, and the contingency plan if performance problems arise.
Approved Casualty & Surety helps brokers identify the operational and underwriting details that can strengthen contractor bonding submissions. When subcontractor risk is a material part of the project, Approved can help determine what information may be useful before the file goes to market.
This article provides general surety information. Bonding and subcontract security requirements can vary according to the contract, project, obligee, jurisdiction, and underwriting review.
