10 Red Flags to Watch Out for When Choosing an ATS

An applicant tracking system (ATS) is software that tracks candidates from application to placement. A corporate HR team mostly needs it to post jobs and move applicants through stages.

A staffing agency needs far more. You’re working many client job orders at once, onboarding people fast, verifying work eligibility, capturing time, running payroll across states, and billing clients. A generic ATS covers the first part and leaves you to stitch together the rest. Keep that gap in mind as you read the list, because most of the red flags below show up there.

1. The ATS stops at the recruiter’s desk

What it looks like: The pitch is all sourcing, resume parsing, and pipelines. Ask about timesheets, payroll, or invoicing and the answer is “we integrate with that.”

Why it matters: Every handoff between systems is a place where data gets retyped, delayed, or wrong. A mistyped pay or bill rate turns into a margin leak and a phone call you don’t want. Agencies often learn this a few months in, when the “affordable” ATS needs three more tools around it.

Ask this: “Walk me through one placement from application to paid invoice. Which steps happen in your system, and which happen somewhere else?” If you want the bigger picture, see why a unified platform beats a patchwork of tools.

2. The demo is scripted and never touches your data

What it looks like: A polished walkthrough with perfect sample candidates. Nobody lets you click around. Hard questions get “great question, we’ll follow up.”

Why it matters: A demo is the best day the software will ever have. If the vendor controls every click, you learn nothing about how it handles your real mess: duplicate records, multi-state pay rules, a client with odd overtime terms.

Ask this: Send three of your real scenarios in advance, such as a rehire, a multi-state placement, and a client with special billing rules. Then have a recruiter and a payroll person run the demo with you. A full evaluation checklist lives in these 14 essential considerations for choosing staffing software.

3. Key US integrations are “coming soon,” extra cost, or handled by a partner

What it looks like: A long logo wall on the website. Then the fine print: some connections are on the roadmap, some cost extra, and some need a consultant.

Why it matters: US staffing runs on connections. You likely need E-Verify and I-9 handling, background checks, job boards, pay cards, e-signature, and your accounting system to work together. If each link is a separate project with a separate bill, the real price of the ATS keeps climbing. Disconnected systems also quietly slow every recruiter down, a pattern covered in four technical dilemmas holding staffing firms back.

Ask this: “Which of the tools I use today connect out of the box? What does each one cost to set up and maintain? Is the API open, and is it in my plan?”

4. Pricing is vague and the contract locks you in

What it looks like: The quote covers licenses. Implementation, training, storage, premium support, extra user types, and annual increases are “discussed later.” The contract runs for years with painful exit terms.

Why it matters: You can’t build a business case on a number that keeps moving, and you can’t compare vendors fairly if one quotes everything and another quotes half. Long lock-ins also remove your leverage if service slips.

Ask this: Get a written, line-by-line quote for year one and year three, including setup, migration, training, support tiers, storage, and price-increase caps. Ask what the exit terms are and who owns the company. Then turn the numbers into a payback estimate with this ROI framework for staffing software so your CFO sees real math.

5. Applying on a phone is slow, and candidates quit

What it looks like: A long desktop form squeezed onto a small screen. Resume upload fails on some phones. Candidates must create an account before they can apply.

Why it matters: This one has hard numbers behind it. An Appcast study covered by SHRM found that cutting an application to five minutes or less can lift conversion by up to 365%, and that completion drops by almost half once an application asks 50 or more questions. In high-volume hourly hiring, most candidates are on their phones and have other options. Our look at industrial staffing in 2026 explains why mobile onboarding matters so much there.

Ask this: “Can I apply to one of your customers’ jobs on my phone right now, and what’s the typical completion time?” Then try it yourself with a stopwatch.

6. The AI claims are fuzzy, with no support for US hiring-law compliance

What it looks like: “AI-powered matching,” with no explanation of what the AI does, what data it uses, or how it’s tested.

Why it matters: The US has no single AI hiring law. It has a patchwork, and staffing agencies are squarely in it. Here is where things stand for the rules that matter most:

• New York City (Local Law 144): Employers and employment agencies using automated employment decision tools need a bias audit within one year before use. A December 2025 state Comptroller audit found the city’s enforcement weak, and the city agreed to adopt most of the recommendations, so law firms now advise employers to prepare for heightened enforcement.
• Illinois (HB 3773): Effective January 1, 2026, it treats AI with a discriminatory effect as a civil rights violation and requires notice when AI is used in employment decisions.
• California (FEHA regulations): Effective October 1, 2025, the rules extend liability for automated-decision discrimination to an employer’s agents and require records to be kept for at least four years. Vendors can be pulled into that liability.
• Colorado: The state has rewritten its AI law and pushed back the start date, so confirm where it stands before relying on any vendor’s answer.

Candidates are watching too. Gartner found that only 26% of candidates trust AI to evaluate them fairly, even though just over half believe AI screens their applications. This is general information, not legal advice, so check your obligations with employment counsel.

Ask this: “What exactly does your AI do? Can I switch it off per job or per client? Do you keep the scores and inputs I’d need for a bias audit or four-year record retention? Is a human always the final decision-maker?”

7. Security answers are thin, and nothing addresses candidate fraud

What it looks like: “We take security very seriously” and little else. No clear answer on multi-factor login, role-based access, audit logs, or independent security reports.

Why it matters: Your ATS holds Social Security numbers, bank details for direct deposit, work history, and ID documents. IBM’s 2025 report put the average US data breach at a record $10.22 million, and malicious insider attacks were the costliest type of initial breach, at about $4.9 million. That’s why access controls matter as much as firewalls.

Fraud is the newer problem. Gartner predicts that one in four candidate profiles worldwide will be fake by 2028, and SIA research found that 41% of staffing buyers have hit candidate verification and fraud challenges.

Ask this: “Can I see your SOC 2 Type II report?” A SOC 2 report is an audit by an independent CPA firm on how a vendor protects customer data, and Type II covers how those controls performed over several months, not just on one day. Then ask about multi-factor login, role-based access, IP allow-listing, audit logs, and what the system does to help verify candidate identity. For a deeper look, read about the top data security risks in staffing.

8. Migration and data-export terms are hand-wavy

What it looks like: “We’ll move everything over, no problem.” Nobody says whether that includes notes, call logs, attachments, resumes, and custom fields. The contract is silent on getting your data back if you leave.

Why it matters: Your candidate database is one of your most valuable assets, built from years of recruiter notes. If those notes arrive as one unreadable block, or can’t be exported later, you’ve lost real value. There’s a US compliance angle too. With California’s four-year record rule in mind, you want proof that applications, scores, and decision data can be exported and kept, even after a vendor change.

Ask this: “Will you run a test migration on my data before I commit? Which record types move and which don’t? Who cleans duplicates? If I leave in three years, how do I get a complete export, and what does it cost?” Get every answer in writing. Also ask whether your data lives in its own database or a shared one.

9. Support is slow and references are hard to get

What it looks like: Support is a ticket queue with no named contact. You’re told about “a customer you should talk to,” but it never happens. Or the only references are far bigger than you, or in a different segment.

Why it matters: An outage on payroll day isn’t an IT inconvenience. It’s a paycheck problem for your temps. The quality of support usually matters more than any single feature.

Ask this: Ask for two or three references from agencies like yours, with the same size and the same type of staffing, and call them. Ask what happened during implementation, how fast support responded the last time something broke, and what they’d change.

10. Workflows are rigid, so every rule change becomes a paid project

What it looks like: “That’s not how our system works, but here’s a workaround.” Any change to a form, field, or approval step means a paid services request.

Why it matters: US rules change constantly, and they differ by state. Pay transparency is a good example. Brightmine’s tracker counted 27 US jurisdictions with pay transparency laws as of July 29, 2026, each with its own thresholds and posting rules. Light industrial, healthcare, IT, and clerical staffing also each have different onboarding and pay steps. If the software forces you into its process, your team falls back on spreadsheets.

Ask this: “Which of these can my admin change without your help: job-posting fields like pay ranges, onboarding steps, forms, pay rules, approvals, and reports? How long do changes usually take?”