“This double standard was described as resulting in expectations for single workers to put in longer hours, to volunteer for additional work, and to assume a variety of work activities that were not expected of their co-workers with spouses and children” (Casper & Swanberg, 2009, p. 98).

Casper, W. J., & Swanberg, J. E. (2009). Single childfree adults: The work-life stress of an unexpected group. In A. G. Antoniou, C. L. Cooper, G. P. Chrousos, C. D. Spielberger, & M. W. Eysenck (Eds.), Handbook of managerial behavior and occupational health (95-107). Cheltenham, UK: Edward Elgar.