Which component of ERG theory combines physiological and safety/security needs?

The component of ERG theory that combines physiological and safety/security needs is referred to as existence. In Alderfer's ERG theory, existence needs encapsulate both the basic material requirements for survival, such as food, water, and shelter (physiological needs), as well as the need for security and safety in one’s personal and financial life. This includes aspects such as job security and health safety.

Existence needs represent the foundational layer of human motivation, reflecting a fundamental drive to meet basic survival demands. Once these needs are adequately met, individuals may then focus on higher-level needs, such as relatedness and growth, which pertain to social connections and personal development, respectively. In essence, existence needs are crucial as they set the stage for pursuing more complex motivations.