Payroll Services
Full-service payroll processing — tax filing, direct deposit, W-2/1099s, and multi-state compliance, run by a dedicated team instead of a support queue.
Learn more about Payroll ServicesPayroll · Staffing · HR Outsourcing
Payroll and workforce solutions that make running a business simpler.
Onyx handles payroll, staffing, and HR admin for US employers who would rather focus on the business than the back office.
15+
Years in business
2500+
Employees paid every cycle
20
States served
98%
On-time payroll accuracy
What we do
Three ways we take work off your plate.
Payroll, staffing, and HR outsourcing — run independently or together, by a team that treats each one as a full-time job.
Staffing & Workforce Solutions
Temporary, temp-to-hire, and direct-hire placement, sourced and vetted for your industry instead of pulled from a generic candidate pool.
Learn more about Staffing & Workforce SolutionsHR Outsourcing & PEO
Benefits administration, workers' comp, and day-to-day HR admin, run as a true partnership rather than a self-service portal.
Learn more about HR Outsourcing & PEOIndustries
Built for the industries that can’t afford to get this wrong.
Healthcare
Payroll and staffing for clinics, practices, and care facilities.
Manufacturing
Multi-shift payroll and production-floor staffing.
Construction
Certified payroll, prevailing wage, and jobsite staffing.
Logistics & Warehousing
High-volume staffing for peak seasons and fulfillment.
Professional Services
Payroll, benefits, and HR for growing firms.
Hospitality
Tip-credit payroll and seasonal staffing for hospitality teams.
How it works
From first call to running payroll, without the back-and-forth.
01
Tell us what you need
A short intake call — payroll, staffing, HR, or all three. No commitment, no generic sales script.
02
We build your plan
A scoped plan for your business size, industry, and states of operation, not a one-size-fits-all package.
03
We onboard your team
Employees, systems, and filings are set up correctly from day one — nothing carried over from a messy handoff.
04
You get your time back
Ongoing support from a dedicated team, without you managing the details week to week.
“We stopped thinking about payroll the week Onyx took it over. Filings are on time, employees get paid without questions, and I got a real person on the phone the one time something looked off.”
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We run payroll, staffing, and HR the way we’d want it run if it were our own business.
Resources
Straight answers, not sales copy.
Compliance Guides
Multi-state payroll: what actually changes when an employee moves
Registration, withholding, and reporting obligations shift the moment someone works across a state line — here's what to check first.
Insights
Temp-to-hire vs. direct hire: choosing the right path for a role
Not every open seat should be filled the same way. A short framework for matching the hiring model to the risk.
FAQs
What a PEO relationship actually changes about who employs your team
Co-employment sounds bigger than it is in practice — here's what stays the same and what doesn't.
Get started
Tell us about your business — we’ll tell you exactly how we’d help.
No obligation, no generic sales deck. A real person responds within one business day.