Expanding the boundaries of psychological resource theories.

This article introduces JOOP's special section on expanding the boundaries of resource theories in occupational and organizational psychology. After an introduction of the most relevant resource theories and their current application in occupational and organizational psychology - key resource theories, conservation of resources theory, resource theory of social exchange, and selective optimization with compensation theory - the opportunities and challenges for future research are outlined, as well as the innovative trends emerging from the contributions in this special section. [ABSTRACT FROM AUTHOR]