A search of CINAHL for (MM “Personnel Staffing and Scheduling”) AND ((breaks OR meal* OR rest)) retrieves articles discussing how to ensure breaks,  as well as articles on effect of work breaks on quality of care.   Below are article identified as more relevant to the question of how to facilitate break times.

Rest break guidelines needed to clarify shifts confusion. Harrison M; Nursing Standard.  2009; 23(41): 32-3.

Managers forum. Ensuring meal breaks.Detail Only Available Rietow N; Ingalls J; Kuell D; Proehl JA; Zimmermann PG; JEN: Journal of Emergency Nursing, 2003 Oct; 29 (5): 465-7, 495-502

One-hour, off-unit meal breaks.  Stefancyk AL; American Journal of Nursing, 2009 Jan; 109 (1):     64-6.

Penalties for missed breaks, lunch.  OR Manager, 2001 Jul; 17 (7): 6.

Reorganize staff to address mealtime challenges.  Senior Care Management, 2005 Jun; 8 (6): 69-70.

Rest break guidelines needed to clarify shifts confusion… Gerry Bolger and Annabel Morris (features June 3).  Harrison M.  Nursing Standard, 2009 Jun 17-23; 23 (41): 32-3.

The rules of rest and relaxation: minimizing fatigue to increase patient safety. Joint Commission Perspectives on Patient Safety, 2007 May; 7 (5): 1, 3-4, 8 (journal article) ISSN: 1534-5181

Work force management. Work breaks and patient safety.Detail Only Available Cavorous CA; Suby C; Journal of Clinical Systems Management, 2005 Jan-Feb; 7 (1-2): 7 (journal article)

Breaks are not a privilege, they are an employment right.  Lester J; Nursing Standard. 2008; 23(1): 33.