Employee model Linked to Django User

Question

I have the Django User model and I created Employee model as below

class Employee(models.Model):
         user        = models.ForeignKey(User, on_delete=models.CASCADE, related_name='employees')
         title       = models.CharField(_('Title'), max_length=6, default='Mr', choices=TITLE, blank=False, null=True)
        firstname   = models.CharField(_('Firstname'), max_length=125, null=False, blank=False)

In my sidebar.html I can access the username as {{ request.user }} but I want to show the title and firstname from the Employee model on the sidebar.html