HRMS migration
Field-level mapping, validation, and rollback between UKG Ready and BambooHR. We move data and schema; workflows are rebuilt natively in BambooHR.
UKG Ready
Source
BambooHR
Destination
Compatibility
8 of 10
objects map 1:1 between UKG Ready and BambooHR.
Complexity
BStandard
Timeline
3-5 weeks
Overview
Moving from UKG Ready to BambooHR is a simplification and consolidation migration. UKG Ready is a multi-module HCM suite with complex pay rules, timesheet profiles, and Cost Center hierarchies that organizations frequently outgrow or abandon due to configuration burden. BambooHR is purpose-built for small-to-mid-sized businesses and trades depth of workforce management for an interface that HR teams and employees navigate without dedicated admin support. We extract the core employee record set via UKG Ready's REST API using a configured Service Account with HR and Payroll tab permissions, resolve which Cost Center field holds the primary organizational unit, map accrual balances against BambooHR's time-off policy structure, and load records in dependency order. Workflows including HR Action Requests, Performance Review workflows, Benefits workflows, and Time Approval workflows do not migrate; we deliver a written inventory of these for the customer's admin to rebuild in BambooHR.
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 UKG Ready object lands in BambooHR, including any object-level transformations, lookup resolution, or schema-design dependencies.
Typical mapping — final map is confirmed during the sample migration step.
UKG Ready
Employee
BambooHR
Employee
1:1UKG Ready Employee records map directly to BambooHR Employee records. The primary Cost Center field (confirmed during scoping as holding the organizational unit) maps to BambooHR's Department field. We resolve the employee ID as BambooHR's employeeNumber, validate all date fields against BambooHR's date format setting, and map employment status (active, inactive, terminated) from UKG Ready's Employee Status field to BambooHR's hireDate, terminationDate, and status fields. HR Custom Fields (up to 10) map to BambooHR custom fields with type validation (text, date, picklist) performed during the mapping phase.
UKG Ready
Base Compensation
BambooHR
Pay Rate / Compensation History
1:1UKG Ready Base Compensation records track historical pay changes with effective dates. These map to BambooHR's Pay Rate field for current compensation and a custom compensation history section if the customer maintains historical records. We preserve the most recent effective-dated compensation as the active Pay Rate, and store prior compensation records in a custom field set for audit. Pay frequency (weekly, bi-weekly, semi-monthly) migrates from UKG Ready's Pay Period Profile to BambooHR's pay frequency configuration.
UKG Ready
Accrual Balances
BambooHR
Time-Off Policy Balances
lossyAccrual balances in UKG Ready vary by accrual policy configuration, which may include carryover rules, cap values, and proration settings per policy. BambooHR uses time-off policies with separate accrual methods (accrue by hours, days, or months) and carryover settings per policy type. We map each UKG accrual policy to a corresponding BambooHR policy, explicitly documenting the accrual method, carryover limit, and balance cap. PTO, sick leave, and other leave types receive dedicated mapping during scoping. Accrual history (if required by the customer) is stored as historical custom fields in BambooHR.
UKG Ready
Pay Statements
BambooHR
Pay History
1:1UKG Ready Pay Statements are available via API with View/Edit/Add Payroll permissions. We export earnings, deductions, and net pay per pay period. BambooHR stores pay history as payroll runs within the payroll module. For customers not using BambooHR payroll, we deliver pay statement data as a structured export that the customer can reference from BambooHR's file storage or an attached document. Pay period alignment is preserved by matching the UKG pay period date to the BambooHR payroll run date.
UKG Ready
Employee Assignment
BambooHR
Employment Info (Department, Division, Location)
1:1UKG Ready Employee Assignment records define how employees relate to Cost Centers, locations, and pay groups. The primary Cost Center (confirmed as the organizational unit during scoping) maps to BambooHR Department. Additional Cost Centers and pay group assignments migrate to BambooHR custom fields or the employment info section depending on the customer's reporting requirements. Assignment history is preserved as custom date-stamped fields if the customer requires it.
UKG Ready
Cost Center
BambooHR
Department
lossyUKG Ready supports multiple Cost Center fields per employee, but the primary organizational unit must be explicitly identified during scoping because integrations map to specific numbered fields regardless of label. We confirm the correct Cost Center field, export the distinct Cost Center values as BambooHR Departments, and link employees to those Departments during employee migration. If the customer uses Cost Center hierarchies, we flatten them to a single Department assignment per employee and store the hierarchy in a custom field.
UKG Ready
Benefits Plans
BambooHR
Benefits Enrollment (via file export)
1:1UKG Ready Benefit Plan enrollment data is tied to the HR tab and Benefit Management permissions. Plan types, carrier connections, and enrollment status require value mapping between UKG Ready benefit categories and BambooHR's benefits module if the customer has it enabled. For customers not using BambooHR benefits, we deliver a structured enrollment export (plan name, carrier, coverage level, employee contribution, employer contribution, effective date) that the customer references during manual re-enrollment. Benefits plan configurations themselves do not migrate as they require carrier re-setup.
UKG Ready
HR Custom Fields
BambooHR
Custom Employee Fields
1:1UKG Ready supports up to 10 HR Custom Fields per employee via the Put HR Custom Fields API. We map each custom field to a BambooHR custom employee field, validating field type (text, date, picklist) against BambooHR's supported types. Picklist values from UKG Ready migrate to BambooHR picklist options with the same labels. If a UKG custom field uses a type that BambooHR does not support natively, we store the value as a text field and document the limitation.
UKG Ready
Time Entries
BambooHR
Time Tracking (if enabled)
1:1UKG Ready Time Entries collected via the Time and Attendance module include pay codes, project codes, and exception flags. BambooHR's time tracking is basic and designed for time-off accrual rather than punch-clock hours. We map regular hours worked to BambooHR time entries if the customer uses BambooHR time tracking, but complex pay-coded time entries with shift differentials and premium pay flags require documentation of the original pay codes for the customer's admin to configure in BambooHR or an adjacent payroll system.
UKG Ready
Workflow Configurations
BambooHR
Not Migrated (Written Inventory Only)
1:1UKG Ready HR Action Requests, Performance Review workflows, Benefits workflows, and Time Approval workflows are destination-dependent because workflow logic does not transfer 1:1 across platforms. We do not migrate workflow configurations as code. We deliver a written inventory of every active UKG Ready workflow with its trigger, conditions, assigned actions, and routing logic, plus a recommended BambooHR equivalent (BambooHR's built-in workflows or a separate automation tool). The customer's admin rebuilds these post-migration.
| UKG Ready | BambooHR | Compatibility | |
|---|---|---|---|
| Employee | Employee1:1 | Fully supported | |
| Base Compensation | Pay Rate / Compensation History1:1 | Fully supported | |
| Accrual Balances | Time-Off Policy Balanceslossy | Mapping required | |
| Pay Statements | Pay History1:1 | Fully supported | |
| Employee Assignment | Employment Info (Department, Division, Location)1:1 | Fully supported | |
| Cost Center | Departmentlossy | Fully supported | |
| Benefits Plans | Benefits Enrollment (via file export)1:1 | Mapping required | |
| HR Custom Fields | Custom Employee Fields1:1 | Mapping required | |
| Time Entries | Time Tracking (if enabled)1:1 | Mapping required | |
| Workflow Configurations | Not Migrated (Written Inventory Only)1:1 | Mapping required |
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.
UKG Ready gotchas
Recurring pay calculation errors trace to pay rule and timesheet profile configuration
Security profile API permissions require granular configuration across five tabs
Initial employee roster import may take up to 24 hours to complete in batches
UKG API follows a lifecycle and deprecation policy with 6-12 month advance notice
Cost Center field mapping requires explicit confirmation of which field holds department data
BambooHR gotchas
Undocumented API rate limits can trigger 503 errors
Per-employee pricing model requires active record count verification
API credentials must be sent on every request to avoid extra round trips
Custom field schema varies per account and requires manual inventory
Document and attachment exports are not covered by standard report exports
Pair-specific challenges
Migration approach
Discovery and scoping
We audit the source UKG Ready instance using the REST API via a configured Service Account with HR and Payroll tab permissions. We extract the full employee roster, Base Compensation records, accrual balances, pay statement records, HR Custom Fields, Cost Center definitions, and Employee Assignment data. We confirm the correct Cost Center field for department mapping during this phase. We also document active workflows, pay rules, timesheet profiles, and accrual policy configurations. The discovery output is a written migration scope covering object inventory, field mapping, and an explicit accrual policy translation plan.
Accrual policy and pay rule documentation
We extract every active accrual policy from UKG Ready including carryover rules, cap values, proration settings, and which employees are assigned to which policies. We separately document the pay rules and overtime configurations so the customer has a written record of the original logic. BambooHR time-off policies are configured during this phase to match the UKG accrual structure as closely as possible, with any gaps documented for the customer's admin to resolve before the first payroll run. Pay period configurations (weekly, bi-weekly, semi-monthly) migrate to BambooHR's payroll calendar.
Sandbox migration and reconciliation
We run a full migration into BambooHR using a sandbox or trial environment with production-like data volume. The customer's HR lead reconciles record counts (employees, compensation records, accrual balances), spot-checks 25-50 random records against the UKG Ready source, and confirms that department assignments, employment status, and hire dates are accurate. Any mapping corrections including Cost Center field selection, accrual policy assignment, and custom field type adjustments happen in this phase before production migration begins.
Cost Center and department mapping resolution
We map the confirmed UKG Ready Cost Center field to BambooHR Departments, creating a Department record for each distinct Cost Center value. We resolve the mapping for all employee records during this phase and validate that every employee has a department assignment. If the customer uses multiple Cost Centers per employee for reporting purposes, we store secondary assignments in custom fields and document the mapping in the migration report.
Production migration in dependency order
We run production migration in record-dependency order: Departments (from Cost Centers), Employees (with department assignments and custom fields resolved), Compensation records (with effective dates and pay rates mapped), Accrual balances (with policy assignment resolved), Pay Statement export (structured file delivery if BambooHR payroll is not active), and Benefits enrollment data (structured export). Each phase emits a row-count reconciliation report before the next phase begins. We use BambooHR's API for record inserts with appropriate rate-limit handling and batch chunking.
Cutover, validation, and workflow handoff
We freeze writes to UKG Ready during cutover, run a final delta migration of any records modified during the migration window, then enable BambooHR as the system of record. We validate accrual balances, employment status dates, and compensation records in BambooHR against the UKG Ready source. We deliver the pay rule inventory, accrual policy mapping document, and workflow inventory to the customer's admin team. We support a one-week post-go-live window for reconciliation issues. We do not rebuild UKG Ready workflows as BambooHR workflows inside the migration scope; that is documented separately for the customer's admin team.
Platform deep dives
UKG Ready
Source
Strengths
Weaknesses
BambooHR
Destination
Strengths
Weaknesses
Complexity grading
Standard HRMS migration. All 7 core objects map 1:1 between UKG Ready and BambooHR.
Overall complexity
Standard migration
Derived from compatibility, mapping clarity, API constraints, and data volume across UKG Ready and BambooHR.
Object compatibility
All 7 core objects map 1:1 between UKG Ready and BambooHR.
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
UKG Ready: Not publicly documented; depends on customer tier and agreement.
Data volume sensitivity
UKG Ready 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
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FAQ
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