This study examined six people-integration best practices during mergers and acquisitions (M&As): cultural due diligence, cultural integration, integration planning, integration managers and teams, communication practices, and leadership support. Interviews were conducted with 12 individuals who played key roles in M&As. The study findings supported the use of all the best practices with the exception of cultural due diligence and integration managers. Recommendations of this study are to perform cultural exploration, implement the best practices validated by the study, and hold leaders accountable for supporting the M&A effort. Recommendations for research include examining the impact of external factors on M&A success and improving measures of the people impact on M&A success. This study concludes that organization development practitioners must lead the charge in executing M&As with consideration of the human impact. Practitioners can be aided in this effort by familiarizing themselves with the M&A best practices validated in this study.

Library of Congress Subject Headings

Research projects (MSOD); Consolidation and merger of corporations -- Management; Corporate culture; Organizational change

Date of Award


School Affiliation

Graziadio Business School



Degree Type


Degree Name


Faculty Advisor

Mangiofico, Gary;