HRMS migration
Field-level mapping, validation, and rollback between Paychex and Crelate. We move data and schema; workflows are rebuilt natively in Crelate.
Paychex
Source
Crelate
Destination
Compatibility
4 of 12
objects map 1:1 between Paychex and Crelate.
Complexity
BStandard
Timeline
3-5 weeks
Overview
Moving from Paychex Flex to Crelate is a cross-category migration from an HRMS payroll platform to a recruiting ATS. Paychex organizes data around Workers, Compensation packages, Benefits enrollments, PTO accruals, and Tax Withholding configurations; Crelate organizes data around Candidates, Contacts, Companies, Jobs, and Activities. The primary mapping is Paychex Workers to Crelate Candidates, with organizational structure and custom fields mapped where the schemas align. Payroll register history, retirement plan balances, 401(k) contribution totals, workers' compensation data, and tax withholding configurations have no equivalent Crelate object and are flagged as out-of-scope or documented for manual reference post-migration. We use the Paychex Flex API for extraction and Crelate's REST API with batch chunking for ingestion, preserving historical timestamps on all records that transfer. Automations, workflows, and payroll filing integrations do not migrate; we deliver a written inventory of Paychex-specific processes requiring rebuild in Crelate's workflow builder.
Every standard and custom field arrives verified.
AI proposes the map; you confirm before any record moves.
Parent–child, lookups, and ownership stay linked.
Calls, emails, meetings — with original timestamps.
Documents, uploads, and inline notes move with the record.
Why teams make this switch
Leaving
What's pushing teams away
Choosing
What's pulling them in
Object mapping
Each row shows how a Paychex object lands in Crelate, including any object-level transformations, lookup resolution, or schema-design dependencies.
Typical mapping — final map is confirmed during the sample migration step.
Paychex
Worker
Crelate
Candidate
1:1Paychex Workers map to Crelate Candidates as the primary record mapping in this migration. Each Worker record carries name, address, employment status, employment dates, and employee ID. We extract Workers via the Paychex Flex API and map firstName, lastName, email, address fields, hireDate, and terminationDate to the equivalent Crelate Candidate fields. Employment status (active, terminated, on leave) maps to a Crelate custom field or candidate status value. Worker ID from Paychex is preserved as crelate_paychex_worker_id__c for cross-system reference.
Paychex
Compensation
Crelate
Candidate (custom fields)
1:1Paychex Compensation records hold pay rate, pay frequency (hourly, salaried, commission), and salary history. We extract the current compensation record per Worker and map payRate and payFrequency to Crelate custom fields on the Candidate record (e.g., current_salary__c, pay_type__c as a picklist). Historical salary changes are not mapped as a timeline but as the most recent rate stored as a reference value. Rate type (hourly vs. salaried) maps to a Crelate picklist field. This mapping is informational in Crelate since Crelate is a recruiting ATS, not a payroll system; the customer determines which pay data is relevant for recruiting decisions.
Paychex
Departments
Crelate
Company (organizational unit)
1:1Paychex Departments with parent-child hierarchy extract via the Paychex Flex API and map to Crelate Company records or organizational tags. Each Department becomes a Crelate Organization record or a Company record marked with a custom organizational unit type. The parent-child relationship is preserved via a Crelate custom field parent_department__c pointing to the parent Company record. This allows recruiting teams to route job reqs and placements by department in Crelate.
Paychex
Custom Fields
Crelate
Custom Fields
lossyPaychex Custom Field definitions are scoped at the company level and assigned per Worker via separate API resources. We enumerate all custom field definitions first (the schema pass), then extract values per Worker. Crelate custom fields are typed (short/long answer, picklist, date, numeric, monetary). We map each Paychex field to the equivalent Crelate type during the schema pass, converting Paychex field types to Crelate-supported types. Any Paychex field that has no Crelate equivalent (e.g., a complex calculated field) is documented as a manual-entry field post-migration.
Paychex
Benefits Enrollments
Crelate
Candidate (reference notes)
lossyPaychex Benefits Enrollments (health, dental, vision, voluntary) store carrier, plan type, effective date, and coverage level per Worker. Crelate does not have a native benefits enrollment object. We extract active enrollments and map them to a Crelate custom field block or a formatted text block on the Candidate record (e.g., benefits_summary__c) summarizing carrier, plan, and effective date. The detailed benefits data is preserved as reference documentation rather than structured records.
Paychex
PTO Accruals
Crelate
Candidate (reference notes)
lossyPaychex PTO balances, accrual rates, and usage history per Worker do not map to native Crelate objects. We extract current PTO balances and policy settings and store them as a formatted block on the Candidate record (e.g., pto_balance__c) or as a reference document attached to the record. Accrual policy details are preserved as a written summary for HR reference. Crelate's activity logging can be used post-migration to track PTO requests if the customer enables that workflow.
Paychex
Payroll Register History
Crelate
Reference documentation (out of scope)
lossyHistorical payroll registers (gross pay, deductions, net pay, employer tax contributions per pay period) do not map to Crelate. Crelate is a recruiting ATS and does not store payroll register data. We extract the full payroll register history and deliver it as a structured CSV export to the customer for archival purposes. We recommend the customer retain Paychex access for at least one year post-migration for payroll record retrieval needs. This data is flagged as out-of-scope at the scoping call and excluded from the Crelate import plan.
Paychex
Retirement Plans (401k)
Crelate
Reference documentation (out of scope)
lossy401(k) enrollment status, contribution percentages, employer match configurations, and historical contribution totals per Worker do not map to Crelate. We extract enrollment status and current contribution percentage and store as reference fields on the Candidate record if the customer requires this data accessible within Crelate. Detailed retirement plan data (custodian, account balance, loan status) is extracted as a separate CSV for the customer's records. 401(k) termination fees from Paychex are a separate billing matter and not part of the data migration scope.
Paychex
Tax Withholding Configurations
Crelate
Reference documentation (out of scope)
lossyFederal and state W-4 equivalents, state tax ID mappings, and locality withholding codes stored per Worker do not map to Crelate's schema. Crelate does not have a tax withholding object. We extract all tax elections and deliver them as a structured reference export. The customer retains this data for their accountant or new payroll provider. Any Paychex multi-state filing status (which may be tier-gated) is noted as a pre-migration action item so the customer can confirm their new payroll provider's multi-state coverage before cutover.
Paychex
Workers' Compensation
Crelate
Reference documentation (out of scope)
lossyWC class codes, rate configurations, and coverage policies at the company level do not map to Crelate. We extract the policy details and worker assignments and deliver them as a reference document. WC class code assignments per Worker are preserved as a custom field on the Candidate record if the customer's hiring process requires this information for compliance verification.
Paychex
Time Tracking Entries
Crelate
Activity (reference mapping)
lossyHours worked, overtime, and time-off requests per Worker per pay period are stored in Paychex Flex but do not map to Crelate's activity model. Crelate's Activity object tracks candidate interactions (calls, emails, interviews, placements) rather than payroll hours. We extract a summary of time-off request balances and map them to a custom field block on the Candidate record (e.g., pto_balance__c from the PTO accrual pass). Detailed time tracking data is archived as a CSV export.
Paychex
Paychex Flex API access
Crelate
Crelate REST API
1:1The migration depends on Paychex Flex API access. If the customer has API credentials, we enumerate Workers, Compensation, Departments, Custom Field definitions, and Benefits enrollments programmatically. If the customer does not have API access, we coordinate with their Paychex representative to request a formal data export package. Paychex requires companies to request exports through their support channel, which may route to offshore teams; we guide customers through the request process and validate the export completeness before ingestion begins.
| Paychex | Crelate | Compatibility | |
|---|---|---|---|
| Worker | Candidate1:1 | Fully supported | |
| Compensation | Candidate (custom fields)1:1 | Mapping required | |
| Departments | Company (organizational unit)1:1 | Fully supported | |
| Custom Fields | Custom Fieldslossy | Mapping required | |
| Benefits Enrollments | Candidate (reference notes)lossy | Mapping required | |
| PTO Accruals | Candidate (reference notes)lossy | Fully supported | |
| Payroll Register History | Reference documentation (out of scope)lossy | Mapping required | |
| Retirement Plans (401k) | Reference documentation (out of scope)lossy | Mapping required | |
| Tax Withholding Configurations | Reference documentation (out of scope)lossy | Mapping required | |
| Workers' Compensation | Reference documentation (out of scope)lossy | Mapping required | |
| Time Tracking Entries | Activity (reference mapping)lossy | Mapping required | |
| Paychex Flex API access | Crelate REST API1:1 | Fully supported |
Gotchas + challenges
Platform-specific issues from each side, plus the pair-specific challenges that don't show up on either platform's page on its own.
Paychex gotchas
Overseas support routing for payroll and HR data
No native bulk data export utility
Multi-state filing excluded from base pricing
Quarterly and year-end compliance gaps
Custom Fields scoped to company level
Crelate gotchas
120 req/min API rate limit throttles bulk migrations
20 custom field per-entity cap forces data model decisions
15,000-record export ceiling on single operations
Sequences and automation workflows do not migrate
API key is a querystring parameter, not a header
Pair-specific challenges
Migration approach
Scoping and Paychex API access setup
We audit the Paychex Flex portal for API availability, enumerate all Workers, Compensation records, Department structure, custom field definitions, Benefits enrollments, and PTO accrual policies. If the customer lacks API credentials, we guide them through requesting a formal data export package from their Paychex representative. We also map the employee distribution across states to flag multi-state filing gaps in the current tier. The scoping output is a written migration scope that explicitly lists in-scope and out-of-scope data sets, including the payroll register and tax data excluded from Crelate ingestion.
Crelate schema design and custom field provisioning
We design the destination schema in Crelate, creating custom fields on the Candidate and Company objects to receive Paychex data. We provision fields for compensation (current_salary__c, pay_type__c, hire_date__c), organizational hierarchy (department__c, parent_department__c), benefits summary (benefits_summary__c), PTO balance (pto_balance__c), and the original Paychex Worker ID for cross-system reference. Paychex custom field definitions are mapped to Crelate typed fields (picklist, date, numeric, text) during this phase. The schema is validated in Crelate's test environment before any data moves.
Test migration and transformation validation
We run a test migration with a sample of 50-100 Paychex Worker records into Crelate's test environment. The customer validates field mapping accuracy, custom field data rendering, department structure in Crelate Organizations, and the benefits and PTO reference blocks. We correct any type mismatches, picklist value mappings, or date format issues identified during validation. This phase typically takes one to two weeks and prevents corrections from being applied to the full production set after cutover.
Payroll register and tax data extraction (archive package)
In parallel with Crelate schema design, we extract the full payroll register history, 401(k) enrollment and contribution data, tax withholding configurations, and workers' compensation records from Paychex. We format these as structured CSV exports organized by Worker and pay period. The archive package is delivered to the customer as a reference document set, not imported into Crelate. We document the file structure and field definitions so the customer's accountant or new payroll provider can ingest the archive if needed.
Production migration in dependency order
We run production migration into Crelate in this order: (1) Department and organizational structure into Crelate Company records, (2) Workers into Crelate Candidates with custom fields resolved, (3) Compensation and pay type mapped to custom fields on Candidates, (4) Benefits enrollment summaries and PTO balances as reference blocks on Candidates, (5) Paychex custom field values mapped to their Crelate equivalents. Each phase emits a row-count reconciliation report. Any Worker without a matching Crelate Candidate email goes to a reconciliation queue for the customer to resolve before the next phase.
Cutover, delta sync, and workflow inventory handoff
We freeze Paychex writes during cutover, run a delta migration of any records modified during the migration window, then enable Crelate as the recruiting system of record. We deliver a written inventory of Paychex-specific processes that require rebuild in Crelate's workflow builder, including any onboarding workflows, approval chains, and compliance checklists that existed in Paychex. We support a one-week hypercare window for reconciliation issues raised by the recruiting team. We do not rebuild automations or workflows inside the migration scope; that work is handled by the customer's Crelate admin or a Crelate implementation partner.
Platform deep dives
Paychex
Source
Strengths
Weaknesses
Crelate
Destination
Strengths
Weaknesses
Complexity grading
Standard HRMS migration. 2 of 7 objects need a mapping; the rest are 1:1.
Overall complexity
Standard migration
Derived from compatibility, mapping clarity, API constraints, and data volume across Paychex and Crelate.
Object compatibility
2 of 7 objects need a mapping; the rest are 1:1.
Field mapping clarity
Field mapping is derived from defaults — final spec confirmed during the sample migration.
Timeline complexity
7-object category — typical timelines run 2–7 days end-to-end.
API constraints
Paychex: Not publicly documented by Paychex; enterprise tier may have different limits.
Data volume sensitivity
Paychex doesn't expose a bulk API — REST + parallelization used for high-volume runs.
Estimator
Rule-based pricing — no per-record fees, no manual quotes. Migrations over 2M records are scoped individually.
Step 1
Pick a category, then your source and destination platforms.
Category
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