Is it okay to put private methods in my controller or should I separate them out into some type of helper class with asp.net mvc?

I have a controller that loads some dropdowns based on the user type. For example:

public ActionResult Index()
    {
      switch (SessionHelper.ViewLimit)
          {
            case "C":
              ViewData["CustDivision"] = LoadCustDivisions();
              ViewData["Customer"] = LoadCustomers();
              break;
            case "P":
              ViewData["Customer"] = LoadCustomers();
              ViewData["Employee"] = LoadEmployees();
              break;
            case "D":
              ViewData["Customer"] = LoadCustomers();
              ViewData["Division"] = LoadDivisions();
              break;
             default:
              return RedirectToAction("Logout", "Account");
          }
    return View()
    }

First of all, does the switch statement belong in the controller and second of all if so, where should I put LoadCustomers(), LoadDivisions(), LoadEmployees()?