ProService Hawaii is the dominant PEO in the one state where local depth matters more than a national brand: the Prepaid Health Care Act, temporary disability insurance and island wage law are a specialty, and ProService has offices on four islands, ESAC accreditation since 2006 and more than 3,000 Hawaii employers on its books. The two things to weigh are that it is not on the IRS CPEO list and that the PEO brand serves Hawaii only, so a mainland location falls outside its footprint.
We've placed clients with ProService Hawaii across multiple industries and headcounts. The assessment below reflects what actually happens in real engagements, not what the ProService Hawaii sales deck says happens, not what the affiliate review sites report based on commission spreads, and not what aggregated G2 stars suggest.
ProService Hawaii was founded in 1994 and has grown into the largest PEO in the state, serving more than 50,000 worksite employees in Hawaii and more than 70,000 across all ProService brands. It is privately held: Silver Lake took a majority investment in May 2023, following earlier backing from FFL Partners, and the company acquired Makai HR the same year, bringing its own staff to about 395.
What sets ProService apart is not size for its own sake but where the size sits. More than 3,000 Hawaii employers run payroll through it, and the company keeps offices on Oahu, Maui, Kauai and the Big Island. For an employer with a restaurant on Maui and a warehouse in Kapolei, that means a person who can show up, not a mainland phone queue working in a different time zone. The company markets three tiers, 1 to 25, 26 to 99 and 100-plus employees, and serves hospitality, food service, construction, healthcare, nonprofit and retail employers.
On credentials, ProService has been ESAC accredited continuously since August 2006, with bonded financial assurance behind its payroll tax and benefit obligations. It is not on the IRS CPEO list, which means the federal sole-liability shift for employment taxes that a certified PEO provides is not available here. For most Hawaii small businesses that is a secondary point; for a finance team that screens on it, it is the first question.
ProService does not publish pricing. Every quote comes through a sales conversation and is typically structured as PEPM or as a percentage of payroll, built from headcount, the workers' compensation class codes in the group and the benefits census. Ask for both structures so you can compare like for like against any other quote.
In Hawaii the medical line carries extra weight because the Prepaid Health Care Act sets a floor on what an employer must provide and how much of the premium an employee can be asked to pay. ProService offers HMSA and Kaiser medical plans alongside 401(k), FSA, supplemental lines and an EAP, which are the plans most island employees already know. When you compare, put the plan-by-plan rate table beside your current renewal rather than looking only at the administrative fee.
Agreements are typically annual. Given the private equity ownership since 2023, we would also ask for the renewal pricing method and the service-team continuity commitment in writing before signing, and we would confirm the notice and exit terms in the client service agreement.
The Prepaid Health Care Act, state temporary disability insurance and Hawaii wage law are rules most national PEOs handle from a mainland desk. ProService handles them as its core business, and for a Hawaii employer that is the difference between a compliance answer and a help article.
Oahu, Maui, Kauai and the Big Island each have a ProService office, so service is local rather than remote. For an employer whose managers want to sit across a table from their HR support, no national PEO matches that in Hawaii.
More than 3,000 Hawaii employers and more than 50,000 worksite employees in the state give ProService buying power on island medical plans and a long track record with Hawaii carriers. That scale is why HMSA and Kaiser are both on the menu.
ESAC is the industry's financial assurance program, with a surety backstop behind the PEO's payroll tax and benefit obligations. ProService has carried it continuously for two decades, which is about as much third-party assurance as a private PEO can show.
We frame these as considerations rather than negatives because most are real trade-offs rather than disqualifying flaws, but they are things we make sure clients understand before signing.
A certified PEO takes sole liability for federal employment taxes and lets your wage base carry over on a mid-year start. ProService does not hold that certification, so neither applies. If your CFO or auditors require it, this is a filter, not a footnote.
The PEO brand serves Hawaii. The moment a client opens a mainland location, the employees there need a second provider or a national PEO, and running two PEOs is more administration than most small companies want. We typically revisit the arrangement at that point.
Service is delivered across multiple systems rather than one proprietary platform. It works, but an employer whose team expects a single modern app will notice the seams.
Silver Lake's majority investment and the Makai HR acquisition are recent. That is not a reason to avoid ProService, but it is a reason to get service-team continuity and renewal pricing commitments in the contract rather than the pitch.
When a client is evaluating ProService Hawaii, these are the three alternatives we most often put on the shortlist. The rationale below explains when each one beats ProService Hawaii and when it doesn't. For the full comparison on cost, benefits and service, read ProService Hawaii alternatives compared.
The largest PEO in the country by worksite employees, with both CPEO certification and ESAC accreditation; the comparison to make when a Hawaii employer also has mainland staff or requires the federal tax-liability shift.
Read full review →A high-touch national model with named HR specialists and both credentials, for an employer that wants dedicated service across several states rather than inside one.
Read full review →A Pacific West and Rocky Mountain option that bundles accounting, recruiting and managed IT with co-employment, for an owner who wants more than HR from one vendor; note it carries neither CPEO nor ESAC.
Read full review →A 15-minute call, then we shortlist the alternatives, gather quotes, and sit in the negotiation calls. Free to you, our fee is paid by the PEO you ultimately pick, at the same rate regardless of which one.
No. ProService is not on the IRS CPEO list, so there is no federal sole-liability shift for employment taxes. It has been ESAC accredited continuously since August 2006, which provides bonded financial assurance.
Any size with a Hawaii workforce. The company markets three tiers, 1 to 25, 26 to 99 and 100-plus employees, and its scale in the state means it can serve a five-person shop and a multi-island hospitality group.
Hawaii only, with offices on Oahu, Maui, Kauai and the Big Island. An employer with mainland locations needs a second provider or a national PEO for those employees.
No. Quotes come through a sales conversation and are typically PEPM or a percentage of payroll. Ask for both structures and for the medical rate table plan by plan.
The credential and footprint pair: no IRS CPEO certification, and a Hawaii-only PEO brand. Private equity ownership since 2023 also means service continuity and renewal terms are worth putting in writing.
ProService wins on Hawaii-specific depth and local offices; ADP TotalSource brings national scale, a larger carrier menu and both CPEO and ESAC credentials. A Hawaii-only employer usually starts with ProService; one with mainland staff should compare both.
Yes. The Act's coverage and contribution rules are central to ProService's work, and it offers HMSA and Kaiser medical plans that Hawaii employees already recognize.
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