UserDefaults.standard not saving swift3 xcode 8 - swift3

Question

Hello everybody I'm trying to build a simple one view program to call and navigate a voice menu, I cannot get the UserDefaults to properly save between closing of the app. I've also had issue with getting text to display in the UITextField, I would like for it to display if saved on launch, here is a description of vars:
UserInput - text field for employee ID (what needs saving)
Switch - if Save it is 1 save data, if 0 do not
Submit - submit button that should save the data and call.
This is my first iPhone app and any help would be much appreciated!
enter code here
import UIKit
class ViewController: UIViewController, UITextFieldDelegate {
#IBOutlet weak var UserInput: UITextField!
var SaveIt = true
var employID = ""
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
self.UserInput.delegate = self;
UserInput.keyboardType = .numberPad
if let current_eid = UserDefaults.standard.string(forKey: "emp_ID") {
UserInput.text = current_eid
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func loadDefaults() {
let defaults = UserDefaults.standard
if let UserInput = defaults.string(forKey: "emp_ID") {
print(UserInput)
} else {
// focus on the text field if it's empty
UserInput.becomeFirstResponder() }
UserInput.text = defaults.object(forKey: "emp_ID") as! String?
}
func textFieldShouldReturn(textField: UITextField) -> Bool {
textField.resignFirstResponder()
return true
}
#IBAction func Switch(_ sender: UISwitch) {
if (sender.isOn == true) {
SaveIt = true
}
else{
SaveIt = false
}
}
#IBAction func Submit(_ sender: Any) {
if (SaveIt) {
let defaults = UserDefaults.standard
defaults.set(UserInput.text, forKey: "emp_ID")
defaults.synchronize()
}
let phone = "telprompt://1888247889pppp" + UserInput.text! + "p1p1p1p1";
let url = URL(string:phone)!
if #available(iOS 10.0, *) {
UIApplication.shared.open(url, options: [:], completionHandler: nil)
} else { UIApplication.shared.openURL(url)
}
}
}