Most contractors who’ve used a staffing agency before have at least one story about a bad experience: candidates who showed up unqualified, placements that didn’t last a month, or an agency that promised speed and delivered résumés from people who hadn’t worked in the trade in years.
Those experiences usually trace back to the same root cause: the agency wasn’t actually specialized. They were a general staffing firm that added trades to their service menu.
The good news is that a few questions before you sign will tell you everything you need to know. Here’s what to ask — and what the answers should sound like.
1. What trades do you actually specialize in?
The right answer is a short, specific list. “Electricians, HVAC techs, plumbers, welders, pipefitters” is a specialized agency. “We place everyone from administrative staff to manufacturing workers” is a generalist.
A generalist can’t pre-screen for a journeyman card the way a specialist can. They don’t have relationships with the trade community, and they don’t know what a quality candidate looks like in your specific trade.
Red flag: An agency that claims to specialize in more than 10 or 12 trades is almost certainly not deeply specialized in any of them.
2. How do you verify credentials before submitting a candidate?
Credential verification isn’t optional for licensed trades. A journeyman electrician without a valid license is a liability on your job site. An HVAC tech without EPA 608 certification can’t legally handle refrigerants.
A legitimate agency verifies credentials against state licensing databases before submitting a candidate — not after you make an offer, and not by taking the candidate’s word for it.
What to listen for: A specific process. “We check state licensing boards and verify OSHA certifications” is a process. “Candidates provide their own documentation” is not.
3. What’s your retention guarantee?
A 90-day retention guarantee means the agency replaces a placement at no cost if it doesn’t work out within the first 90 days. This is standard practice among quality agencies because it aligns their incentive with your outcome — they want to get the fit right, not just get someone through the door.
Red flag: A 30-day guarantee, no guarantee, or a guarantee that comes with significant conditions or exclusions.
4. How fast can you realistically deliver?
For most trades, an agency with a healthy active pipeline can present pre-vetted candidates within 24–48 hours. If the answer is “two to three weeks,” you’re talking to a firm that runs a reactive search process — they’ll start sourcing after you sign, not present from a pipeline they maintain.
What to listen for: Specificity. “We have active pipelines in electricians, HVAC, and plumbers — for those trades, we can typically present candidates within 48 hours” is specific. “It depends” without further detail is a flag.
5. What does your screening process look like?
Before a candidate reaches you, what has the agency actually done? At a minimum, a credible agency should have:
- Verified licensure
- Conducted a structured phone or video interview
- Confirmed employment history in the trade
- Checked references from prior employers in the trade
- Confirmed OSHA certifications and any project-specific requirements
Ask how many candidates they screen before presenting one to an employer. A ratio of 5:1 or higher suggests meaningful selectivity. A 1:1 ratio means everyone who applies gets sent.
6. Do you place temps, direct hires, or both?
Some agencies specialize in temp or contract placements; others focus on direct placement (contingency search). Many do both. Know which model you need — and confirm the agency is genuinely experienced in it.
If you need a permanent journeyman electrician and the agency’s core business is contract staffing, they may not have the network or process to find you a candidate who wants a permanent role.
7. Can you provide references from contractors in my trade?
This is the most direct signal of genuine specialization. An agency that has placed electricians with electrical contractors can give you names. An agency that hasn’t placed many — or placed them poorly — will hedge or redirect.
Ask specifically: “Can I speak to two or three contractors you’ve placed [your trade] with in the last 12 months?” If they can’t provide that, you have your answer.
The Bottom Line
A good trades staffing agency should be able to answer every one of these questions directly and specifically. If you’re getting vague answers, over-promising, or a sales pitch that doesn’t touch on your actual requirements, trust that instinct.
The best agencies know they’re selling on specificity — and they’re confident in their process because it actually works.
Schedule a 30-minute intro call and ask us these same questions. We’ll give you straight answers — including if we’re not the right fit for your specific needs.