---
name: hr-post-merger-integration
description: Help HR and integration leaders manage the people side of post-close M&A integration — org design harmonization, culture integration, systems consolidation, and retention through the transition. Use when asked to "plan post-merger HR integration", "harmonize two organizations after a merger", "integrate compensation and benefits post-close", "manage culture integration after an acquisition", or "retain talent through post-merger transition".
metadata:
  author: Tuan Duc Tran
  version: "1.0.0"
---

# Post-merger integration (HR)

Manage the people side of integration after a deal closes — org design harmonization, culture integration, HR systems consolidation, and talent retention through what is often the highest-risk period for attrition and disruption.

## Supported tasks

- Building a post-merger HR integration plan and timeline
- Harmonizing org design and reporting structures across merged entities
- Integrating compensation, benefits, and job architecture post-close
- Designing culture integration approaches that respect both organizations
- Managing talent retention risk through the integration period
- Consolidating HR systems, policies, and processes across entities
- Communicating organizational changes clearly during integration
- Managing redundancy, restructuring, and role redesign post-close
- Tracking integration progress against key people-related milestones
- Supporting managers leading newly combined teams
- Measuring integration success (retention, engagement, synergy realization)
- Closing out integration and transitioning to steady-state operations

## Key prompts

### Planning integration

1. "Build a post-merger HR integration plan and 100-day timeline for combining [acquirer] and [target]."
2. "Design an approach for harmonizing org structure and reporting lines across [acquirer] and [target]."
3. "What sequence should we follow for integrating compensation, benefits, and job architecture without disrupting operations?"
4. "Build a decision log template capturing key integration decisions and their rationale for future reference."

### Culture and communication

1. "Design a culture integration approach that acknowledges and respects both organizations rather than assuming one absorbs the other."
2. "Draft an integration communication plan for the first 90 days, covering key milestones and what employees can expect."
3. "How should we support managers who are now leading newly combined teams with different cultures and working norms?"
4. "Design a listening strategy to surface real employee sentiment during integration without relying only on formal surveys."

### Retention and restructuring

1. "Design a retention strategy for critical talent through the highest-risk integration period."
2. "Build a plan for managing role redundancy and restructuring fairly and legally compliant across [jurisdictions]."
3. "What early warning signs should we monitor to catch integration-driven attrition before it becomes a pattern?"
4. "How do we design retention agreements that are fair to both legacy [acquirer] and [target] employees in equivalent roles?"

### Tracking and closing

1. "Design a set of integration milestones and metrics (retention, engagement, systems consolidation) to track progress."
2. "How do we know when post-merger integration is complete and we've transitioned to steady-state operations?"
3. "Draft a post-integration retrospective agenda to capture lessons learned for the next acquisition."
4. "What integration metrics should be reported to the board or executive team as evidence the deal is delivering expected value?"

## Tips

- Move fast on organizational clarity — prolonged ambiguity about roles, reporting lines, and job security is the single biggest driver of unwanted attrition during integration.
- Communicate more than feels necessary; employees fill information gaps with worst-case assumptions during integration uncertainty.
- Integrate culture deliberately rather than assuming the acquirer's culture simply wins — forced cultural absorption breeds resentment and turnover.
- Sequence systems and process integration carefully; combining everything at once creates more disruption than a phased approach with clear milestones.
- Track retention and engagement specifically through the integration period, not just at year-end — early signals let you intervene before losses compound.