Clinical case for NHS care change 'overwhelming'
15 December 2013 Last updated at 08:53 GMT
Hospitals in England will have to ensure senior doctors and key diagnostic tests are available seven days a week under new plans.
The measures form part of a vision unveiled by NHS England to tackle the higher death rates at weekends.
Dean Royles, the chief executive of NHS Employers (part of the NHS Confederation), told BBC Breakfast that the clinical case for extending patient care was "overwhelming".