Corporate mergers lead to separations or divestitures of business units. This regularly raises questions regarding the applicability of § 613a of the German Civil Code (BGB), the scope of design options under the Transformation Act (UmwG), and the conditions for operational dismissals. Labor law issues related to challenges in succession planning, outsourcing of services, the formation of profit centers, and the implications for works agreements or collective bargaining agreements are also addressed.