Run your business.
We’ll handle the people work.
OneSource brings payroll, human resources, employee benefits and risk management together with one responsive local team—so Arizona employers can move forward with confidence.
25+ Years
Serving Employers
BBB Accredited
A+ Rating
Locally Owned
and Operated
One relationship. Every employee function.
Choose the support you need today, then add services as your workforce grows.
Payroll Services
Accurate payroll processing, direct deposit, tax deposits, certified payroll, job costing and customized reporting.
Human Resources
Practical support from recruiting and onboarding through policies, performance, compliance and employee relations.
PEO & ASO Solutions
Flexible outsourcing models that consolidate payroll, HR, benefits and employer risk under one accountable partner.
Employee Benefits
Benefits administration and employee support designed to strengthen your offering while reducing internal workload.
Workers’ Compensation & Risk
Coverage support, claims management, safety programs, OSHA assistance and modified return-to-work planning.
Big-provider capability. Small-team accountability.
When payroll is due or an employee issue cannot wait, you need more than a portal and a case number. OneSource combines modern administration with experienced, accessible Arizona support.
Find the gaps before they become expensive problems.
Request a complimentary Human Resource Assessment and receive a practical written review with no obligation.