@article {353656,
	title = {A workplace intervention improves sleep: results from the randomized controlled Work, Family \&amp; Health Study},
	journal = {Sleep Health},
	volume = {1},
	number = {1},
	year = {2015},
	month = {2015},
	pages = {55-65},
	abstract = {
	Study objectives: The Work, Family, and Health Network Study tested the hypothesis that a workplace intervention designed to increase family-supportive supervision and employee control over work time improves actigraphic measures of sleep quantity and quality.



	Design: Cluster-randomized trial.



	Setting: A global information technology firm.



	Participants: US employees at an information technology firm.



	Interventions: Randomly selected clusters of managers and employees participated in a 3-month, social, and organizational change process intended to reduce work-family conflict. The intervention included interactive sessions with facilitated discussions, role playing, and games. Managers completed training in family-supportive supervision.



	Measurements and results: Primary outcomes of total sleep time (sleep duration) and wake after sleep onset (sleep quality) were collected from week-long actigraphy recordings at baseline and 12 months. Secondary outcomes included self-reported sleep insufficiency and insomnia symptoms. Twelve-month interviews were completed by 701 (93\% retention), of whom 595 (85\%) completed actigraphy. Restricting analyses to participants with >=3 valid days of actigraphy yielded a sample of 473-474 for intervention effectiveness analyses. Actigraphy-measured sleep duration was 8 min/d greater among intervention employees relative to controls (P \&lt; .05). Sleep insufficiency was reduced among intervention employees (P = .002). Wake after sleep onset and insomnia symptoms were not different between groups. Path models indicated that increased control over work hours and subsequent reductions in work-family conflict mediated the improvement in sleep sufficiency.



	Conclusions: The workplace intervention did not overtly address sleep, yet intervention employees slept 8 min/d more and reported greater sleep sufficiency. Interventions should address environmental and psychosocial causes of sleep deficiency, including workplace factors

},
	url = {http://www.sciencedirect.com/science/article/pii/S2352721814000047},
	author = {Olson, Ryan and Crain, Tori L and Bodner, Todd and King, Rosiland B and Hammer, Leslie B and Klein, Laura C and Leslie Erickson and Moen, Phyllis and Berkman, Lisa F and Buxton, Orfeu M}
}
