NullPointException Object not found, caused by a variable not accepting value?

Hi,

I am making a script that should spawn a prefab, add a component to it and the component should run Work() function, however I get that nullPointExcept object not attached to instance of object for the Work() function. Actually I found where the problem appears but I can not seem to understand why.

 NullReferenceException: Object reference not set to an instance of an object
 Waiter.Work () (at Assets/Scripts/Worker/Waiter.cs:32)
 WorkerInfo.Update () (at Assets/Scripts/Worker/WorkerInfo.cs:14)
 

I have the WorkerInfo script:

 public class WorkerInfo : MonoBehaviour
 {
     public Worker worker;
 
     public WorkerInfo(Worker worker)
     {
         this.worker = worker;
     }
     
     private void Update ()
     {
         worker.Work();
     }
 }
 

Pretty basic. It is attached to the gameobject spawned and should call Work() depending on the worker type. Could be either Cook or Waiter. For now I have only implemented waiters: public class Waiter : Worker {

     public int mealEveryXMinutes;
     
     private int lastMinuteServed = 1;
     private DayCycle dayCycle;
     private TimeData time;
     
     public Waiter(string name, int skill, float salary)
     {
         id = ++Worker.lastWorkerId;
         this.name = name;
         this.skill = skill;
         this.salary = salary;
         mealEveryXMinutes = calculateMealFreqFromSkill();
     }
     
     private void Awake()
     {
         dayCycle = GameObject.Find("GameManager").GetComponent<DayCycle>();
     }
     
 
     public override void Work()
     {
         if (OrderStack.orders.Count == 0) return;
         time = dayCycle.getTime();
         int currMin = Mathf.FloorToInt(time.minutes);
         if ( currMin % mealEveryXMinutes == 0
              && lastMinuteServed != currMin)
         {
             lastMinuteServed = currMin;
             serveFood();
         }             
     }
     
     private int calculateMealFreqFromSkill()
     {
         return (20 - Random.Range(skill / 2, skill));
     }
 
     private void serveFood()
     {
         Order currentOrder = OrderStack.orders[0];
         currentOrder.customer.receiveFood(currentOrder.food);
         OrderStack.orders.RemoveAt(0);
         Debug.Log("<color=green>" + currentOrder.customer.name + " served " + currentOrder.food.FoodName + " by " + name + "</color>");
     }
 }
 

I don't think you actually need these bits of code but for the sake of solving the problem here they are. And lastly where I think the problem appears. Its on the script that should spawn the objects:

 private static void createWorkerObjects()
     {
         foreach (Worker worker in workers)
         {
             Transform workerObj = Instantiate(stWorkPrefab).transform;
             WorkerInfo workerComp = workerObj.gameObject.AddComponent(typeof(WorkerInfo)) as WorkerInfo;
             workerComp.worker = worker;
             workerComp.gameObject.name = worker.name;
             workerObjects.Add(workerObj);
         }
     }

workerComp.gameObject.name = worker.name works fine, so worker.name is what it has to be. The problem seems to be workerComp.worker = worker; as everything else seems to be find? Any help would be appreciated!

Thanks in advance!