Though almost all the points are covered above, let me try to sum up with some additional pointers:
Prior Merger/Acquisition
1. Understanding the People Policies & Processes (Identifying the differences).
2. Understanding the Compensation & Benefits and working out the differences in terms of the loss after the merger or acquisition.
3. Understanding the current hierarchy, band/level, and mapping the same with your company.
4. Understanding the work culture and engagement initiatives.
Post Merger
1. Facilitating a one-time payout for the difference amount to curb the loss.
2. Aligning people processes and policies to integrate through a gradual process.
3. Integrating Compensation, Band, Designation, and in case of salary correction, issuing revised compensation letters.
4. Organizing frequent town halls, all-hands meetings to assimilate the employees of the merged/captive company in a settled way.
5. Adopting a strategy that is open and transparent to win the confidence of people in the captive.
Thanks.
Best Wishes,
Rajiv Naithani