When you install the base OpenERP applications, you get the ability to manage system users, but you will notice that there are no menu options for entering and managing employees. To begin working with human resource applications, you will need to install the base Employee Directory application.
Go to the Settings menu and install the Employee Directory application using the same process as the previous OpenERP applications. Click on the Install button.
After you have installed the Employee Directory application, you will see a new menu at the top: Human Resources. Clicking on the menu will take you to the employee listing where you can begin adding employees.