A PEO shares employer responsibilities with your business through co-employment. In Utah, it must be licensed by the Utah Insurance Department, pays employees’ wages and allocates the remaining duties in a written agreement. An ASO provides HR and payroll administration while your company remains the only employer. The choice depends on which responsibilities you want help managing and how the provider will deliver that help.
Denali HR is a PEO listed by the Utah Insurance Department. That’s the model I work with most often, but an ASO or an internal HR setup may be more suitable for some businesses.
When comparing providers, I ask owners to look closely at the service team, the division of responsibilities and the cancellation terms. The definitions below explain what changes between an ASO and a PEO; the contract tells you what a particular provider will do.
What is an ASO?
An ASO (administrative services organization) handles HR and payroll administration for your business without becoming an employer. Your company stays the only employer of your people and keeps every employer duty. The ASO does the work you’ve contracted it to do.
Utah law doesn’t define an ASO, and an ASO arrangement isn’t co-employment under Utah’s PEO statute (Utah Code Title 31A, Chapter 40). So there’s no state-set list of what an ASO includes. What’s in the bundle, and what the ASO answers for if it makes a mistake, comes down to the contract.
What is a PEO, and how does Utah define co-employment?
A PEO (professional employer organization) enters an ongoing co-employment relationship with your business, and Utah spells out how that works:
- Licensing. PEOs are licensed by the Utah Insurance Department (Utah Code 31A-40 and Rule R590-250). A company needs that license before it provides or advertises PEO services under any name, including “employee leasing” or “staff leasing” (31A-40-301). Directly licensed PEOs renew by October 1 each year.
- Ongoing, not temporary. Utah defines co-employment as “intended to be ongoing rather than a temporary or project specific relationship” (31A-40-102). That’s what separates a PEO from a temp agency.
- A written split of duties. The agreement allocates employer rights and obligations. The PEO pays wages and remits payroll taxes, unemployment contributions or both. Either co-employer may hire, discipline and terminate, and unless the agreement says otherwise, your business still directs and supervises the work (31A-40-202).
- Notice to employees. The PEO must tell your employees in writing that they’re co-employed.
- The fine print on pay. Unless the agreement says so, the PEO’s pay obligation doesn’t include bonuses, commissions, severance, deferred compensation or PTO pay (31A-40-202). Those stay with you unless the contract moves them.
A PEO can handle much of the payroll and compliance administration while you continue to decide whom to hire, what to pay, which benefits to offer and how to run the business. Read the agreement to understand the division of duties. Our guide explains what a PEO is and why Utah businesses use one. For an example involving an employee claim, read this explainer.
You’ll also hear the term CPEO. That’s a voluntary IRS certification created in 2014. A certified PEO is treated as the employer for federal employment taxes on the wages it remits (26 U.S.C. 3511). It’s a fair question to ask any PEO, and it’s separate from the Utah license, which is mandatory.
ASO vs PEO vs doing it yourself: how do they compare?
The table compares the employer relationship and the responsibilities each arrangement involves.
| PEO | ASO | DIY (in-house) | |
|---|---|---|---|
| Who is the employer? | You and the PEO, as co-employers under a written agreement | Your business only | Your business only |
| Who pays wages and remits payroll taxes? | The PEO, as the agreement allocates | Your business, with the ASO processing | Your business |
| Who directs the day-to-day work? | You, unless the agreement says otherwise | You | You |
| Hiring, discipline, firing | Either co-employer may under Utah law; owners usually keep these decisions | You | You |
| Utah license required? | Yes, from the Utah Insurance Department | No Utah ASO definition | No |
| Written notice to employees | Required | Not applicable | Not applicable |
| Bonuses, commissions, PTO pay | Yours unless the agreement moves them | Yours | Yours |
| Tends to fit | No in-house HR; you want employer duties shared | A capable in-house person; you want to stay the sole employer | Time, a simple payroll and someone who owns compliance |
Which HR model fits a Utah small business?
Start by identifying who handles HR now and which work they need help with. Employee count affects the workload, but it doesn’t tell you whether you already have the right expertise in-house.
In Utah, the duties start early. From your first employee you need Form I-9s, new-hire reports to Utah DWS within 20 days, workers’ compensation coverage, and final pay within 24 hours when you end someone’s employment. At 15 employees, federal anti-discrimination law and the Utah Antidiscrimination Act apply. At 50, FMLA applies, and so does ACA reporting once you have 50 full-time employees, counting equivalents.
Meanwhile, SHRM’s 2025 benchmarking found a median of 1.98 HR staff per 100 employees. For a 40-person company, that’s about 0.79 of one full-time HR person (40 × 1.98 ÷ 100). Most small employers don’t have that person. Both models fill the gap, in different ways:
- Handle it yourself if your payroll is simple and someone, probably you, has the time and the appetite to own compliance. Plenty of Utah businesses start here. The risk is the item nobody owns, like a missed new-hire report.
- Choose an ASO if you already have a capable office or HR manager who makes the calls, you want to stay the only employer, and what you’re buying is processing and administrative help.
- Choose a PEO if nobody in the building owns HR, you want payroll and tax remittance off your desk, and you want employer duties split by a written agreement with a licensed partner. Our PEO service page shows how we split that work.
What should you ask before you sign with an ASO or a PEO?
Ask how you’ll get help when a problem occurs and what it takes to end the agreement. Get the answers in writing before signing.
“Will you be thrown into a queue for customer service, or will you have a dedicated customer service rep… who knows your account in and out?”
— Josh Henderson, Founder, Denali HR
-
Who handles urgent problems? Find out whether you’ll work with a named contact who knows your account or submit requests to a shared service queue. Ask how payroll errors and other time-sensitive issues are handled.
-
Can someone come on site? Ask whether anyone can come out to your business when you need help in person.
-
What are the cancellation terms?
“You never go into an agreement planning to cancel, but what are the cancellation terms?”
— Josh Henderson, Founder, Denali HR
I’ve seen PEO agreements that lock a business in for three years. Others run a year, and some are month to month. Know which one you’re signing.
-
When is payroll due, and when are people paid? Get the submission deadline and the pay dates in writing. Utah’s own rules still apply: paydays at least semimonthly, with pay due within 10 days after the pay period closes (Utah Code 34-28-3).
-
Which responsibilities are included? With a PEO, review the allocation of employer duties, including bonuses, commissions and PTO. With an ASO, check the services included in the fee and anything you’ll still need to handle separately.
-
Is the PEO licensed in Utah? Check the Utah Insurance Department’s PEO Company List before you sign.
-
Can you meet the service team? A conversation before signing can help you understand who you’ll work with each payroll, even if the meeting is virtual.
-
How do the benefits compare? Don’t assume the biggest provider has the best plans. In my experience, smaller PEOs can sometimes compete with the programs large national PEOs offer, partly because a national PEO’s book of business is tied up with its carrier. Get real quotes before you decide.
Fees vary by provider and service scope. Our guide to HR outsourcing pricing models explains the structures to compare.
Frequently Asked Questions
What is an ASO in HR?
An ASO, or administrative services organization, handles HR and payroll administration for a business without becoming an employer. The business stays the only employer and keeps every employer duty, and the ASO does the administrative work its contract covers. Utah law doesn’t define an ASO, and it isn’t co-employment under Utah’s PEO statute.
What is the difference between an ASO and a PEO?
The difference is who the employer is. With a PEO, your business and the PEO are co-employers under a written agreement, and in Utah the PEO pays wages and remits payroll taxes or unemployment contributions as that agreement allocates. With an ASO, your business is the only employer and buys administrative help.
Does a PEO have to be licensed in Utah?
Yes. Utah requires a license from the Utah Insurance Department before a company provides or advertises PEO services under any name, including employee leasing or staff leasing. Directly licensed PEOs renew by October 1 each year, and the department publishes a PEO Company List you can check.
Who controls my employees if I use a PEO?
You do, day to day. Under Utah law, unless the agreement says otherwise, your business directs and supervises the work, while either co-employer has the right to hire, discipline and terminate. In practice, owners keep decisions like who to hire and what to pay.
Is Denali HR a PEO or an ASO?
Denali HR is a PEO. Denali HR, LLC appears on the Utah Insurance Department’s PEO Company List, and we work with small and mid-sized businesses from our office in Sandy, Utah.
To discuss a PEO or ASO arrangement for your business, book a call or call (801) 480-0002. Bring questions about the services, responsibilities and cancellation terms you need to compare.
This article is general information, not legal or HR advice. Employment laws vary by jurisdiction and change over time, so talk with Denali HR or your employment attorney before choosing an arrangement or signing an agreement.
Sources
- Utah Code 31A-40-202: Professional employer agreements
- Utah Insurance Department: Utah PEO Company List (PDF)
- IRS: Certified Professional Employer Organization
- SHRM: 2025 CHRO Benchmarking data brief (PDF)
About the author: Josh Henderson is the founder of Denali HR, a Sandy, Utah PEO that provides payroll services, employee benefits administration, HR support and risk management for small and mid-sized businesses. Founded in 2019, Denali HR focuses on personalized HR support without the complexity of large PEO providers.
