| Current-state assessment | Establish evidence and priorities | System inventory, profiling, lineage, risks and root causes | HR, data, technology, risk |
| Employee data model | Create consistent structure and meaning | Entities, attributes, relationships, formats and effective dates | Architects, analysts, developers |
| Source-of-truth matrix | Resolve authority and conflicts | Source hierarchy, ownership, survivorship and exception rules | Data owners, stewards, platform teams |
| Quality rule catalogue | Make expectations measurable | Completeness, validity, uniqueness, consistency and timeliness rules | HR operations, data quality, audit |
| Lifecycle control design | Control worker changes | Joiner, mover, leaver events, approvals, SLAs and reconciliation | HR, IAM, payroll, service operations |
| Implementation roadmap | Sequence change realistically | Work packages, dependencies, decisions, risks and acceptance criteria | Programme sponsors, PMO, delivery teams |