Telling horror stories of long hours and stressed, overtired nurses caring for patients on the verge of death, lawmakers and nurse advocates on Thursday called for a state law establishing mandatory nurse-to-patient ratios and prohibiting mandatory overtime. Nurses around the country say they're frequently asked to work double shifts to cover staffing shortages. Several nurses from the five state-run psychiatric hospitals, for example, told the State Journal earlier this month they're worked to the point of exhaustion because of excessive mandatory overtime. John Armelagos , president of the Michigan Nurses Association backing the legislation, told of a Livonia nurse who couldn't get to an elderly patient because she had too many others to care for.