ASO services are the HR outsourcing model for employers who want payroll, benefits administration, and compliance support without giving up the company identity. You keep your EIN. You keep your benefit carriers and plan design. OPES Companies, in North Kansas City, Missouri, runs that work with a dedicated HR contact. This is Administrative Services Outsourcing, not the insurance product also called ASO.
If a Google result is talking about stop-loss and claims files, you are in a different industry. If a quote moves your people onto someone else’s master medical plan and files payroll taxes under someone else’s EIN, you are looking at a PEO. This article is for the employer who already has plans worth keeping.
What you are actually trying to protect
Owners usually mean three things when they say they do not want to “give up control.”
The EIN. Payroll taxes, W-2s, and unemployment accounts stay in your company’s name. Year-to-date history does not get rewritten onto a co-employer. Auditors, lenders, and benefit vendors still see your entity as the employer.
The benefits structure. Deductibles, waiting periods, who is eligible, and which broker you call at renewal stay yours. Employees do not get a surprise carrier letter because you outsourced HR.
Employment decisions. Hiring, pay, discipline, and termination stay with your managers. ASO services put an experienced HR person on the file. They do not become the employer of record.
OPES ASO is built around that split. Administration and HR expertise move. Employer identity does not.
What it means to keep your own benefits
Benefits administration is processing, not a new marketplace. Open enrollment, new-hire eligibility, qualifying life events, terminations, and carrier updates get tracked and completed. Employees get a place to send questions that is not your inbox.
You remain the plan sponsor. Your carriers stay your carriers. If the broker relationship still serves you, keep it. That is often the entire reason a company with a decent package lands on ASO services instead of co-employment.
What does not change because you signed:
- Plan design (unless you decide to change it)
- Who the contract is with at the carrier
- How contributions and eligibility work, unless you rewrite them
- The fact that you, not the vendor, are the sponsor on the documents employees actually care about
What does leave the office: the calendar work that breaks coverage. Miss an eligibility date and a new hire starts without the coverage they were promised. Miss a life-event window and a spouse or newborn sits outside the plan. Those are administrative failures. They are also the work a backup team is built to catch.
A vendor who talks about “optimizing your benefits” as the core of ASO services is usually selling a PEO, where employees typically move onto the provider’s master plans. That can be the right buy. It is a different buy. Say so in the first call so you are not comparing quotes that are not the same product.
OPES uses ProSoftware as the cloud platform for payroll, onboarding, benefits administration, employee self-service, time tracking, and reporting. Employees get a consistent place to look things up. You still sponsor the plans behind that screen.
What it means to keep your EIN
This is the shortest test in the sales process: whose number is on the payroll tax filings after go-live?
Under this model, wages are reported under your federal employer identification number. Tax deposits stay in your name. State unemployment and withholding accounts stay yours. Implementation is a transfer of administration, not a change of employer.
That matters for more than pride of ownership.
- Historical payroll and tax records remain your records. Quarter or year-boundary moves are often cleaner. Confirm timing during scoping.
- 401(k) and other retirement plans that sit on your entity do not have to be torn down and rebuilt onto a co-employer’s platform just to get HR help.
- Banking, bonding, and vendor forms that ask for the employer EIN still match the company people already know.
A professional employer organization files payroll taxes under its own EIN. That is how large-group benefits and workers’ compensation solutions typically enter the picture. Co-employment is the mechanism. If you are not willing to put that EIN on the filings, you are not shopping a PEO, no matter what the brochure title says.
ASO vs PEO is the comparison when you are genuinely weighing both. You do not have to make that decision on day one.
What ASO services still take off your plate
Keeping the EIN and the plans does not mean keeping the whole HR department on one office manager.
The administrative foundation is the same as business process outsourcing: payroll against your pay rules, benefits processing on your carriers, onboarding paperwork and I-9s, time and attendance tied to payroll, personnel files that can survive an audit.
On top of that, ASO services add the risk layer: compliance guidance (federal, Missouri, Kansas, and local), handbook development that matches how you actually operate, employee-relations support (documentation, corrective action, terminations, accommodations), and risk/safety resources.
The full include-and-exclude list is in what ASO includes and what it does not. The point for this buyer is simpler. You are not choosing between “do it all in-house” and “hand the company to a co-employer.” You are choosing a partner who runs the repeating work and sits with you on the hard conversations, while the legal employer stays you.
You still recruit. You still manage people day to day. OPES does not staff your jobs and does not give legal advice. Counsel owns legal risk. The dedicated HR contact owns the practical file.
When keeping your plans is the right call
This model fits when:
- The medical, dental, vision, or retirement package you have is good enough to recruit against, or the broker relationship is one you intend to keep
- You want payroll accuracy and HR backup without rewriting employer identity
- Managers need help documenting, not a new benefits marketplace
- You have (or will have) people on both sides of the Missouri-Kansas line and need process, not co-employment, as the first fix
- You may want a PEO later and do not want to switch partners to get there
Kansas City employers hit that last point often. Worksites and homes straddle two states. That fact does not, by itself, require a PEO. It does require a team that can run the right payroll rules and keep policies current. Ask which states they support before you sign.
Because OPES runs ASO and PEO in-house, you can move to co-employment later without changing vendors or rebuilding payroll history. That is the public service-page claim. Confirm it in scoping so the contract is not a dead end.
When keeping the plans is the wrong call
Be honest about the bottleneck.
If you cannot hire because the small-group plan is uncompetitive, this model will administer that plan beautifully and you will still lose candidates. A PEO’s large-group medical, dental, vision, retirement, and ancillary options exist for that problem. The trade is co-employment and, typically, moving people onto the PEO’s master plans.
If workers’ compensation cost or claims administration is the actual pain, say that in the first conversation. PEO engagements include workers’ compensation solutions as part of the co-employment structure. ASO includes safety resources and risk-management guidance without moving you onto a PEO workers’ compensation program.
If the only gap is a one-off handbook or investigation, you may want a project, not an ongoing engagement. Do not buy a year of administration to solve a three-week problem.
Insurance ASO is still the wrong aisle
The phrase “ASO services” is messy in search. In health insurance, ASO means Administrative Services Only: a self-funded medical plan where a carrier or TPA processes claims and you keep the risk. Stop-loss, large-claim files, and explanation of benefits are that product.
HR ASO services are Administrative Services Outsourcing. Same letters. You are buying payroll, benefits administration on plans you already sponsor, and HR expertise, without co-employment. You are not buying claims processing, and you are not becoming self-funded by accident.
If a salesperson cannot tell those two apart in the first five minutes, leave the call.
Questions that protect the EIN and the plans
Ask these in writing:
- After go-live, whose EIN is on our payroll tax filings?
- Do we keep our current carriers, broker, and plan design?
- Is this Administrative Services Outsourcing (HR) or Administrative Services Only (self-funded health)?
- What happens to year-to-date payroll and tax history in the conversion?
- Who is the dedicated HR contact, and what is in monthly scope vs billed when a termination or handbook rewrite hits?
- If we later need large-group benefits or co-employment, is that the same team?
If the answers sound like master plans, a new EIN, or claims risk, you are not looking at ASO services as OPES sells them. If they sound like your number, your carriers, and a named person who knows your pay rules, you are.
Frequently asked questions
What are ASO services?
In this context, ASO services are Administrative Services Outsourcing: payroll and benefits administration plus compliance, handbook, and employee-relations support, while you remain the sole employer of record. They are not insurance Administrative Services Only.
Do we keep our EIN?
Yes. Wages are reported under your federal employer identification number. A PEO is the model where filings typically move to the provider’s EIN.
Do we keep our own benefit plans?
Yes. You stay the plan sponsor. Your carriers and plan design stay yours unless you choose to change them. Enrollments, eligibility, and life events are administered. Employees do not move onto a PEO master plan as part of this model.
How is this different from just outsourcing payroll?
Payroll-only (or BPO) is the administrative foundation. ASO services include that foundation, then add the compliance and employee-relations layer. Choose ASO when the pain is risk and judgment, not only capacity.
Can we move to a PEO later without losing our history?
OPES runs both models in-house. Many clients start here and move when benefits purchasing power becomes the constraint. Confirm conversion timing and what happens to files if you leave, before you sign.
Keep the plans. Keep the number. Get the work off your desk.
You do not have to choose between a brittle in-house setup and co-employment. ASO services exist for the company that already has an identity worth keeping: an EIN that should stay on the filings, and benefits that employees already understand.
OPES Companies is at 214 E 18th Avenue in North Kansas City. If you want a scope that matches your carriers, states, and headcount, schedule a consultation. Call 816-994-9190.