If you’re reading EHS recruiting company reviews, you’re likely deep in the research phase. You’re probably also racing a deadline to fill an open seat. You need to source a safety manager for a plant or a technician crew for a turnaround, and every agency on your shortlist promises “vetted” talent on a “fast” turnaround.
This guide measures ResponsAble Safety Staffing against Aerotek, Randstad, and Kelly Services on the criteria to weigh before you sign anything. We drew every statement about another company from that company’s own published materials or from reporting about it, linked inline and current as of October 2026. Where a company withholds a figure, we say so rather than estimate or misrepresent.
What Distinguishes One EHS Staffing Agency from Another?
Five factors determine whether a safety placement succeeds. Cost ranks below all of them, because a poor safety hire drains far more than any fee. Lost uptime and a damaged reputation will always outweigh the fee to find the right safety professional, and that’s before an incident takes a life.
Focus: Specialist or Generalist
A broad-based agency fills accounting clerks and forklift operators alongside safety managers through one branch network. That breadth pays off when you need 200 workers across ten job families. It counts for less when you need one person who can run a confined-space program on day one. Find out who screens the candidate and whether that recruiter has ever worked in the field. Depth of expertise carries the most weight for roles that demand highly credentialed, field-tested candidates.
Screening Process
“Vetted” carries different weight from one agency to the next. Probe the depth of the process and request the steps in writing. Does the agency run drug screening, background checks, and credential verification? Does a real person interview the candidate live and face to face? Will the interviewer know what a CSP, CHST, or OSHA 500 holder should be able to answer?
Geographic Reach
A national office count shows where an agency keeps desks, but location no longer limits reach as it once did. Desks alone won’t reveal whether the agency can send safety professionals willing to travel to your site. Ask where its last three comparable placements came from.
Engagement Models
Shutdown coverage, a credentialed project hire for a year or two, and a permanent EHS manager demand distinct searches. Many agencies concentrate on one or two, and few handle every type well. Measure the scope of your hire against the agency’s industry knowledge, and confirm it can select the type of safety professional your project requires.
Time-to-Fill
Most firms we reviewed keep this number private, which tracks insofar as scopes vary. Many factors affect time-to-fill. However, those that publish it signal a ready bench. Ask for the figure by role type, and ask what happens after placement if the fit falls short.
Why is there increasing demand for safety professionals?
Labor market conditions compound the pressure. The Bureau of Labor Statistics projects employment of occupational health and safety specialists and technicians to grow 12 percent from 2024 to 2034, a pace BLS classifies as much faster than average. A Trace One analysis of the same BLS data contrasts that with 3 percent growth across all occupations and estimates roughly 18,300 openings a year.
Scarcity rewrites the math of hiring. When credentialed candidates run thin, every agency draws from the same pool, and the advantage flows to the firm that can find qualified safety professionals fastest and keep them. Software now parses résumés and flags a lapsed certification in seconds, and any competent recruiter should use it. It cannot yet predict whether a candidate will halt hot work when a gas reading spikes and the schedule says press on. Only an interviewer who knows the work can probe for that.
What are the benefits of staffing agencies that scale?
Aerotek, Randstad, and Kelly Services built their businesses for scale. If you want one vendor covering many job families across many sites, that reach delivers a genuine advantage.
Aerotek belongs to Allegis Group, which Staffing Industry Analysts (SIA) ranks as the largest staffing firm in the United States, with $9.11 billion in 2025 staffing revenue, and fourth worldwide. Aerotek itself placed first on SIA’s 2026 list of the largest U.S. industrial staffing firms, with 7.3 percent of that market in 2025. It reports more than 1,000 recruiters and over 200 offices across North America, serving manufacturing, logistics, construction, aviation, facilities, and maintenance. For high-volume industrial hiring, few firms can match that network.
Randstad has ranked as the world’s largest staffing firm for eight straight years, holding 3.6 percent of global staffing revenue in 2025, and places fourth in the United States with $4.12 billion. It reports nearly 4,700 branches and in-house locations in 40 countries. Its U.S. engineering practice lists safety managers and safety specialists among the roles it recruits.
Kelly Services ranks sixth among U.S. staffing firms, with $3.46 billion in 2025 staffing revenue. The company sold its European staffing business to Gi Group in January 2024 and now concentrates on global MSP and RPO programs and on specialty staffing and outcome-based services in North America.
SIA’s figures also expose how fragmented the market remains. The world’s 100 largest staffing firms captured 40 percent of a $639 billion global market in 2025, and their combined revenue held flat while the overall market grew 2 percent. Firms outside the top 100, specialists among them, therefore grew faster than the giants.
Scale buys reach, but it leaves wide room for firms that compete on depth.
While these three major staffing providers do not currently highlight a safety-specific screening process or precise fill time for safety roles, they offer volume of service and global reach. These both matter but largely depend on the scope and industry.
The sharper question for a single EHS hire is who vets the candidate. At a firm engineered for volume, the recruiter handling your safety manager opening may also staff operator and maintenance roles that week. A CSP holder, a former refinery safety lead, and a candidate who memorized OSHA citations can look identical on paper. Only a recruiter who evaluates safety talent daily can tell them apart.
Where ResponsAble Fits
ResponsAble is the smallest firm in this comparison. One headquarters in Baton Rouge and a single business line will never out-volume 200 offices, and we built the company for a different job.
Safety staffing is our sole business. Since 2007, we have recruited safety personnel at every level, from confined space attendants and safety technicians on industrial sites to corporate EHS directors. We place them as temporary staff, temp-to-hire, project hires, and direct hires.
Specialization shows its value on hard-to-fill roles. Direct placements average two to four weeks because we draw on a standing national database of EHS talent instead of opening each engagement with a job posting. When Cameron LNG spent weeks hunting for a safety engineer with LNG process knowledge and documentation skills, ResponsAble delivered the hire.
We staff projects nationwide, from New York to California, so our reach follows the candidate database rather than an office map.
Frequently Asked Questions
Safety-exclusive. ResponsAble recruits safety and EHS professionals and the support roles around them, from confined space attendants and fire watch to regional EHS managers and corporate safety directors (safety staffing services). We run no office-staffing or IT desk.
ResponsAble’s direct hire searches average two to four weeks (direct hire). Aerotek, Randstad, and Kelly Services do not publish fill times for EHS roles on the pages we reviewed, so ask each for its figure by role type
Initial assessment. We learn the role, the site, your safety program, and who the hire will report to.
Job description. We write or sharpen the description so it attracts qualified candidates and filters out the rest.
Market analysis. We benchmark salary ranges and candidate supply in your region so your offer lands.
Review, interview, and qualify. Our recruiters interview candidates and verify credentials such as the CSP, CHST, or OSHA 500/510 before you meet anyone.
Shortlist. You receive two or three hand-selected finalists instead of a stack of résumés.
Client interviews. We schedule interviews, gather your feedback, and guide you to an offer.
Background and reference checks. We complete both before the new hire starts.
When you hire, you pay a one-time placement fee based on the hire’s first-year base salary.
For temporary coverage and project hires, a ResponsAble project manager takes over the full hiring cycle: screening and hiring, training and testing, placement and on-site support, HR and payroll, and risk and liability. We recruit 52 weeks a year, so the bench exists before your request arrives.
Talk to a Safety Recruiter
A comparison guide offers useful insights to better frame the questions as you evaluate staffing agencies. Make sure your answers come from people who know the work.
As the safety staffing experts, we have answers for you. Tell us the role, the site, and the start date. A ResponsAble recruiter will tell you who is available, how we screened them, and how soon they can reach your site.
Schedule a free consultation or call 225-753-1909.