--- title: Workday API Integration on Truto slug: workday category: HRIS canonical: "https://truto.one/integrations/detail/workday/" --- # Workday API Integration on Truto **Category:** HRIS **Status:** Generally available ## How it works 1. **Link your customer's Workday account.** Use Truto's frontend SDK; we handle every OAuth and API key flow so you don't need to create the OAuth app. 2. **Authentication is automatic.** Truto refreshes tokens, stores credentials securely, and injects them into every API request. 3. **Call Truto's API to reach Workday.** The Proxy API is a 1-to-1 mapping of the Workday API. 4. **Get a unified response format.** Every response uses a single shape, with cursor-based pagination and data in the `result` field. ## Use cases - **Sync the enterprise org chart into your product automatically** — If you sell to large enterprises, their HR teams expect your app to reflect real-time reporting lines, departments, and locations without manual CSV imports. Pulling Worker and Supervisory Organization data from Workday lets you keep your product's user directory accurate as people are hired, promoted, or offboarded. - **Trigger automated workflows on employee lifecycle events** — SaaS platforms in IT security, identity governance, or asset management need to act the moment an employee is hired or terminated in Workday. Polling for status changes lets you fire downstream actions — like provisioning accounts on hire or revoking access on termination — without any manual intervention from the customer's IT team. - **Write hired candidate data back into Workday from your ATS** — Applicant tracking and recruiting platforms need to pass candidate information into Workday to kick off the onboarding business process. Without this write-back, HR teams are forced into dual data entry, which is a dealbreaker for enterprise buyers evaluating your product. - **Route approvals and tag expenses using Workday's cost center and manager hierarchy** — Travel, expense, and procurement SaaS products need to know each employee's manager and cost center to enforce approval chains and financial coding. Importing this structure from Workday ensures compliance and eliminates manual configuration by finance teams. - **Unblock enterprise deals that require a native Workday integration** — For many Fortune 500 procurement processes, a working Workday integration is a hard requirement on the vendor checklist. Offering it as a native capability — rather than asking the customer to build middleware — removes friction from the sales cycle and accelerates deal velocity. ## What you can build - **Real-time employee directory sync** — Automatically import and maintain an up-to-date roster of active employees, their job profiles, locations, and contact information from Workday into your product. - **Manager hierarchy and reporting-line mapping** — Pull Supervisory Organization data from Workday to build accurate org charts and manager-based approval workflows inside your application. - **Hire and termination event detection** — Detect new hires, terminations, and leaves of absence as they happen in Workday to trigger provisioning, deprovisioning, or notification workflows in your product. - **Pre-hire record creation from external systems** — Push candidate data from your recruiting or onboarding platform into Workday to initiate the Hire business process without requiring HR to re-enter information. - **Cost center and location import for financial routing** — Sync Workday cost centers and office locations into your expense, procurement, or IT asset platform to automate budget tagging and geographic routing rules. - **Custom field mapping for tenant-specific data** — Surface Workday's tenant-specific custom fields — like employee badges, internal skill codes, or union affiliations — and map them into your product's data model without hard-coding per customer. ## FAQs ### How does authentication work with Workday? Workday supports multiple auth models including username/password for its SOAP-based Web Services (WWS), OAuth 2.0 for its REST API, and certificate-based authentication for server-to-server integrations. Most enterprise tenants also require configuring Integration System Users (ISUs) with specific security groups (ISSGs) that control which data the integration can access. Truto handles this complexity so your team doesn't have to build and maintain the auth flow. ### Does Workday expose a REST API or only SOAP? Workday offers both. However, the SOAP-based Workday Web Services (WWS) is far more comprehensive and is what most enterprise integrations rely on — it exposes business processes, custom fields, and deep organizational data that the REST API does not fully cover. Truto can abstract the underlying protocol so you interact with a clean API regardless of whether SOAP or REST is used underneath. ### Can I access custom fields that are unique to each customer's Workday tenant? Yes, but this is one of the hardest parts of a Workday integration. Every Workday tenant is heavily customized — no two instances look alike. Custom fields, calculated fields, and custom objects vary per customer. Truto can help map these tenant-specific fields dynamically so you don't need to hard-code per deployment. ### Is this integration available today on Truto? The Workday integration is built on request. There are no pre-built Unified API resources or tools available yet, but Truto can scope and build the integration based on your specific data requirements and use cases. Reach out to discuss your needs. ### Can I do delta syncs or do I have to pull all employee data every time? Workday's Get_Workers operation supports an 'As_Of_Effective_Date' and 'Updated_From' parameter that lets you pull only records changed since your last sync. This delta sync approach is critical for performance in tenants with tens of thousands of employees and helps stay within rate limits. ### What are Workday's rate limits and how do they affect large syncs? Workday enforces rate limits that vary by tenant configuration and API type. SOAP API calls are generally throttled per-session, and large Get_Workers responses must be paginated. Workday admins can also set concurrency limits on Integration System Users. Truto manages pagination and retry logic to handle these constraints transparently. ## Related reading - [Best Unified API for HRIS in 2026: Workday, Gusto, & Rippling](https://truto.one/blog/best-unified-api-for-hris-in-2026-workday-gusto-and-rippling-compared/) — Compare the best unified APIs for HRIS in 2026. Learn how to navigate Workday, Gusto, and Rippling integrations without draining engineering bandwidth.