Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE Circulation_History ( employee_name VARCHAR )
TABLE: CREATE TABLE Employees ( employee_name VARCHAR )

### Question ###
List the employees who have not showed up in any circulation history of documents. List the employee's name.

### Accurate SQL ###

SELECT employee_name FROM Employees EXCEPT SELECT Employees.employee_name FROM Employees JOIN Circulation_History ON Circulation_History.employee_id = Employees.employee_id