BOSS API · Employer of Record
Your back office, delivered as an API
Embed payroll, timecards, invoicing, and compliance directly into your ATS or platform. Your brand stays in front while BOSS handles employment risk, payroll funding, and multi-state compliance behind the scenes. No portals needed.
How it works
Data moves once. Everything else syncs.
Once a placement is confirmed in your ATS, it flows through assignment, time, payroll, and billing automatically. No re-typing, fewer errors, faster cash.
ATS placement
Your ATS sends the placement via the REST API: worker, client, rates, location.
Onboarding
W-2 docs, I-9, state forms, and workers’ comp with COIs, all automated.
Time & approvals
Hours submitted and approved, with OT and state rules applied automatically.
Payroll & taxes
Funds advanced, payroll runs, taxes remitted, paystubs issued.
Invoice & report
Invoices posted with backup, plus real-time dashboards and accounting sync.
What’s in the API
Every back office function, one integration
All services are accessible via API or white-label UI, so you keep your brand and deliver one unified client and worker experience.
Payroll funding
We advance the cash so you can meet weekly payroll even on net-60 client terms. Capital-light growth with no float.
W-2 compliance
BOSS is the legal employer, with wage-hour, OT, state taxes, and 1099 vs W-2 guardrails enforced in the background.
Timecard management
Submission, approvals, expenses, and rate rules, synced to payroll and billing the moment they’re approved.
Invoicing & collections
Consolidated client invoices with timesheet backup, plus collections and cash application handled for you.
Tax filing & reporting
Payroll taxes filed and remitted, with real-time dashboards, exports to accounting, and margin analytics.
Multi-state coverage
Workers’ comp, COIs, and state registrations across all 50 states. Expand without opening new entities.
White label
Your brand in front. BOSS behind the scenes.
Most EORs force your clients into their portals. The BOSS API is different: fully white-label and integration-ready, so clients and workers stay inside your brand experience while we carry the employer risk.
- Your logo, URLs, and workflows stay front and center
- Keep your ATS. Placements map to assignments automatically
- Expand into contract, fractional, or multi-state placements with no new entities
- Real-time data available through the REST API
Partner API access
Create as many API keys as you need and connect your systems directly to BOSS.
Direct integration
A single REST API connects your ATS, CRM, or platform. No portals to log into.
Encryption
Data encrypted in transit and at rest.
FAQ
Common questions
How is the BOSS API different from other EORs?
Most EORs require you to use their portals and workflows. The BOSS API is fully white-label and integration-ready. You embed payroll, timecards, invoicing, and compliance directly into your own ATS, CRM, or platform, while BOSS handles employer risk, payroll funding, and multi-state compliance behind the scenes.
Do we have to replace our ATS or accounting system?
No. Keep your current tools. Placements flow from your ATS into assignments, and status stays in sync across the lifecycle: onboarded, time submitted and approved, payroll run, invoice posted. Invoices and reports sync to your accounting platform.
What services are included?
Payroll funding, W-2 compliance, timecard management, invoicing, tax filing, workers’ comp, and multi-state coverage. Everything is accessible via API or a white-label UI, so you keep one branded experience for clients and workers.
How fast can we launch?
BOSS already holds state registrations, workers’ comp policies, and payroll tax accounts, so you can start placing in new states in days. No new entities, no cash float, no compliance risk.
See a live run: placement → timecard → invoice
Book a walkthrough with our team and see the API-powered back office on your own workflow.
Book a demo