More than 100 nurses, led by the Healthcare division of the Service Employees International Union, massed in Pittsburgh's Capitol rotunda to demand that the state Senate act on a bill that would ban mandatory overtime health care workers who take care of patients in hospitals and nursing homes. The state House passed such a ban on mandatory overtime by a vote of 166 to 31 nine months ago, but the Senate hasn't taken up the issue. The healthcare workers demanded that the Senate vote on the bill.