Wales could be the first UK country to ensure 'enough nurses'.
Kirsty Williams, the Welsh Liberal Democrat leader, is to present her 'More Nurses' Bill to the Health and Social Care Committee today.
She said: "Safe nursing levels are a bedrock for effective care. Nurses provide round the clock care for patients, and work in every kind of healthcare setting. Quite simply, nurse staffing levels are too important to be left to 'guidance'.
"Making safe nursing levels a statutory responsibility will provide a legislative basis for patients and staff to challenge poor levels of nurse staffing."