Optimum HR vs TriNet

HR expertise.
A team that answers.
No ticket numbers

Optimum HR and TriNet both provide payroll, benefits administration, HR support, compliance guidance, and workers’ compensation support through a PEO model. TriNet is designed for employers with 5 to 1,000+ employees. Optimum HR is purpose-built for employers with 5 to 250 employees that want a more hands-on service experience, including three dedicated representatives, direct phone access to a real person, an average email response time under 2 hours, and transparent PEPM pricing.

Clients

200 +

Glassdoor Rating

4.8

Years in Business

QRR

97 %

Why businesses switch

Service, responsiveness, and personal attention big-box PEOs can’t match.

Many PEOs are built to serve thousands of companies at once. Optimum HR is built to serve yours, and three commitments define that difference.

A real person, every time

When you call Optimum HR, a real person answers, rather than an AI bot or a ticket number in a queue. Email responses average under two hours, so questions about payroll and benefits get an answer the same day.

Three reps with your name on them

Every client works with a dedicated benefits rep, a dedicated payroll rep, and a dedicated HR rep. These named specialists already know your account, so you reach people who understand your business rather than a shared support pool.

Simple pricing with no hidden fees

Optimum HR charges a flat per-employee rate (PEPM), published up front, with no bundled surprises. The fee stays steady as your team grows, rather than climbing like a percentage of payroll every time you give a raise.

Compare

Side by side: Optimum HR vs TriNet

Every PEO sells payroll, benefits, and compliance. The differences that shape the daily experience show up in response times, dedicated support, and how each provider prices its service. The table below compares Optimum HR and TriNet across the eight points clients feel most.

How they compare

Optimum HR

Trinet

Client satisfaction (2025 NPS) Clearly Rated categorizes an NPS of 50+ as “Excellent” and 70+ as “World Class"

Not publicly disclosed

Glassdoor rating Employee-reported satisfaction

★★★★★★★★★★ 4.8

★★★★★★★★★★ 3.4

Average email response time How quickly questions get answered

Under 2 hours

No published SLA

Phone support Who picks up when you call

A real person answers

Number listed; live-answer model not publicly specified

Dedicated reps Named people who know your account

3 named reps for every client

HR team; dedicated reps not publicly specified

Built for your size Company size the provider is built to serve

Purpose-built for 5 to 250 employees

5 to 1,000+ employees

Pricing model How the fee is structured

Flat PEPM, no bundled or hidden fees

Custom quote

Footprint and expertise Where the provider operates

Deep California expertise, all 50 states

All 50 states

TriNet information reflects publicly available information as of July 2026. Items marked not publicly disclosed are not published by TriNet. TriNet supports employers with 5 to 1,000+ employees, offers custom-quote pricing, operates nationwide, and has a 3.4 Glassdoor rating, but it does not publicly specify dedicated HR representatives or average email response times. Optimum HR is built for California-headquartered businesses with 5 to 250 employees, offering three named representatives, real-person phone support, under-two-hour email responses, transparent PEPM pricing, a 75 NPS, and 4.8 Glassdoor rating.

Client Reviews

What do Optimum HR clients say about the service?

EXCELLENT

Based on 22 reviews

Google Review

Write a Review

Omar Barakat

3 months ago

I had a wonderful experience working with Nancy and team at OptimumHR. They are very prompt in responding to any questions or audit requests. The team was very knowledgeable and helped us stay in compliance with state and federal…

John Halili

4 months ago

The company I work for switched to Optimum less than a year ago and there has been nothing but up-sides since doing so. Everybody in the company is grateful for the benefits that Optimum provides such as Life Insurance and Dental,…

Jonathan Walters

4 months ago

Been using Optimum for over 10 years at my place of business. Great payroll solution for a small to medium sized business. They take care of payroll, taxes, on-boarding and many other HR needs so you can focus on your business.

Genevieve Watkins

4 months ago

Switching to Optimum about a year ago was one of the best decisions our company has made. Their team is incredibly responsive, knowledgeable, and genuinely helpful, making everything from payroll to HR much easier to manage. I highly…

MAV Customer Service

6 months ago

I am very pleased with the fast response with the optimum team (specially) with Ana Sakoda on taking care of the questions or events that I have come across. She's very prompt on taking care business.

Bryan Guardado

7 months ago

Optimum HR has been an excellent partner for our company. Their team has provided strong support in payroll, HR, employee benefits, and compliance-related matters. They are responsive, professional, and always willing to help when…

Mike R

9 months ago

I am very satisfied with the level of service we receive from Optimum in providing support for payroll, benefits and HR. My team is Nicole, Julio, Lindsey and Nicki. Thank you Optimum Team!

Tania Chevalier

9 months ago

I've had the privilege of working with Optimum HR to support our mutual client, and I've always been impressed by them. The team is professional, thorough, and very responsive. I'm especially grateful to work with Nicki Tran and Julio…

Tester 16

10 months ago

Shaked went on a zoom call with me and was super friendly and knowledgeable to the general information I had. For very specific questions, she provided me the information needed to get.

Sue Regan

10 months ago

I always had a great experience working with the OptimumHr team. I would highly recommend this company to anyone!

Good to know

Frequently Asked Questions

Is Optimum HR a good fit for my industry?

Yes. Optimum HR is built around your company size rather than a single industry. If you have between 5 and 250 employees, Optimum supports businesses across manufacturing, healthcare, real estate, professional services, wholesale, software, and more. The experience stays the same whether you work in a traditional field or a tech-forward one. See our Industries page for more information.

Do you support employees in more than one state?

Yes. Optimum HR runs multistate payroll and compliance across all 50 states. Its deepest expertise sits with California-headquartered businesses, the most complex compliance environment in the country, and a multistate team is fully supported.

Do you work with international teams?

Optimum HR focuses on US-based teams. That focus is deliberate, because it keeps service personal and compliance expertise deep. If your workforce is entirely domestic, you get specialists who do nothing but US payroll, benefits, and HR.

How does your pricing work?

Optimum HR charges a flat per-employee-per-month (PEPM) fee based on your needs. The rate is published and predictable, with no bundled or hidden fees for setup or off-cycle runs. Unlike a percentage-of-payroll model, your administrative cost does not climb every time you raise pay or hand out bonuses.

Experience a PEO partnership where you are known, not numbered.

Fifteen minutes is all it takes to find out whether Optimum HR is the right fit for your business.