Connect payroll to everything else you run.

Full REST APIs with webhooks, a sandbox, and pre-built UI components, plus integrations with accounting, ERP, HRIS, time clocks, benefits carriers, and 401(k) recordkeepers.

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API: REST + webhooks
SANDBOX: Test environment on day one
UI COMPONENTS: Pre-built front-end library
INTEGRATIONS: Accounting, ERP, HRIS, 401(k), carriers

RUN-PAYROLL.TS

// Start the next run on a named payroll policy
const policy = 'Biweekly-Hourly'
const res = await fetch(api + `/wep/companies/${companyId}/payroll/${policy}`, {
  method: 'POST',
  headers: { authorization, 'api-version': '2.0' }
})
const { runId, payDay } = await res.json()

200 OK · runId 48213 · payDay 2026-03-20

THREE WAYS TO INTEGRATE

01Fully white-labeled. A complete experience under your brand.
02Pre-built UI components. Embed ready-made screens in your product.
03REST API + webhooks. Full control over every workflow.

Explore the API docs

WHAT'S INCLUDED

01
Payroll API
Companies, employees, and payroll runs via REST.
02
Webhooks
Events for runs, changes, and filings.
03
Front-end library
Embed pre-built payroll screens.
04
Accounting + ERP
Journal entries posted each run.
05
HRIS + time clocks
Employee and hours data synced.
06
Carriers + recordkeepers
Benefit and 401(k) data exchanged automatically.

HOW IT WORKS

A planned go-live, with parallel runs first.

01Discovery + design. We map entities, pay rules, deductions, and integrations.
02Data + configuration. YTD wages, tax accounts, benefits, and GL mapping loaded and tested.
03Parallel runs. One or more payrolls run beside your current provider and matched to the cent.
04Go live. Usually at a quarter or year start. Employees invited, your team trained.

WORKS WITH

INCLUDED IN

INCLUDED FROM COMPLETE HCMAnd every plan above it.From $26 / employee / moCompare plans

QUESTIONS ABOUT APIs + integrations

Which plan includes APIs + integrations?: It is included from the Complete HCM plan up.
Does it share data with the rest of Worklio?: Yes. Every module works from one employee record, so changes flow to payroll, time, benefits, and reporting automatically.
Can we add it later?: Yes. Modules can be added at any time; your data is already in place.

SECURITY

Audited controls on every module.

SOC 2 Type II, ISO 27001, 27018, and 9001. Layered access rights, two-factor authentication, and a full audit trail.

IMPLEMENTATION

A named team, parallel runs first.

Fastest for 50–500 employees, phased for multi-entity enterprises.

WORKLIO INSURANCE

Benefits and comp, billed with payroll.

Benefits admin is free when Worklio Insurance Services is your broker of record.