Education · April 15, 2026 · 8 min read
Subcontractors carry the most risk and have the least leverage. But there are 10 specific things you can do — before, during, and after the job — that dramatically reduce your exposure.
Subcontractors do the actual work on most construction projects — but they sit at the bottom of the payment chain and carry a disproportionate share of the risk. The GC controls the schedule, the owner controls the money, and the sub gets squeezed in between.
Here are 10 rules that experienced subcontractors follow to protect themselves. They're not complicated, but most subs skip at least half of them.
This sounds obvious. It isn't. The majority of subcontractors sign contracts they haven't fully read — usually because the GC sends it over the day before the job starts, and they feel pressure to get to work.
What to do: Read every page. Pay special attention to payment terms, scope of work, indemnification, and termination clauses. If you don't understand something, ask — or upload it to ContractDoctors for a plain-English review.
The cost of skipping this step: One bad clause can cost more than the entire contract is worth.
The scope of work defines what you're agreeing to do. If it's vague, the GC will use it to pile on extra work without extra pay.
What to check:
Red flag: "All work necessary to complete the HVAC system" — this means anything the GC decides to include, after you've agreed to a fixed price.
In states that require a preliminary notice (notice to owner, pre-lien notice), send it the first day you start work. Don't wait.
Why: If you miss the preliminary notice deadline (typically 20-30 days from start of work), you lose your mechanic's lien rights — your single most powerful tool for getting paid.
Tip: Send it even in states where it's technically optional. It puts the owner on notice that you're on the job and expect to be paid.
Don't just accept the payment terms in the contract. Push for:
The leverage you have: GCs need reliable subs. If you have a good reputation and the GC wants you on the job, they'll negotiate.
If it's not written down, it didn't happen. This applies to:
When this matters: In a payment dispute, your daily logs and photos are evidence. The GC's superintendent won't remember what happened 6 months ago — but your documentation will.
This is the rule most subs know and most subs break. The GC's super asks for something extra, you do it to keep the job moving, and then you can't get paid because there's no signed change order.
What to do: When you're asked to do extra work, send a written notice that says: "This work is outside our original scope. We will submit a change order proposal by [date]. We will not proceed until the change order is approved in writing."
Yes, this is uncomfortable. It's less uncomfortable than losing money.
Every state has different deadlines for filing a mechanic's lien. Know yours and calendar them.
Key dates to track:
Set calendar reminders for each deadline at the start of every project. If a payment is late, you want to know exactly how much time you have to file.
Make sure your insurance actually meets the contract requirements — and make sure it covers your real risks.
Essential coverage:
What to check: Whether your policy covers "insured contracts" (your indemnification obligations), and whether it covers additional insured requirements.
Not all GCs are created equal. Before committing to a project:
A good-paying GC is worth more than a low bid. If a GC has a reputation for slow-paying or disputing invoices, add that risk to your price — or walk away.
For contracts over $100,000, the cost of a construction attorney reviewing the contract (typically $500-$2,000) is a rounding error compared to the potential losses from a bad clause.
When to get legal help:
For smaller contracts: Upload to ContractDoctors for an AI review. You'll get the same clause-by-clause analysis in minutes, with specific recommendations for what to negotiate.
Protecting yourself as a subcontractor isn't about being adversarial — it's about being professional. GCs respect subs who read contracts, document their work, and follow proper change order procedures. These 10 rules won't slow you down on the job — they'll keep you from losing money on it.
Start with the contract. Upload your next one to ContractDoctors and get a full review before you sign.
subcontractor · protection · risk management · best practices