If you need to access an employee's emergency contact information, you can view this in the following ways.
Emergency contacts tab in their profile
Emergency contacts report
Click Employee data.
Click Emergency contacts.
Here you see a list of employees with emergency contact details. You can export this to Excel.
If you want to see a list of all employees without emergency contacts, under show click on the drop-down, then click Employees without emergency contacts.
It tells you how many there are. You can click on their name to immediately go to their profile where you can add these details for them. Alternatively, you could ask your employees to do this themselves.