Here is my model class:
public class MyModel { public Employees[] MyEmpls{get;set;} public int Id{get;set;} public OrgName{get;set;} }
If you are getting model.MyEmpls as null then you can create a condition on server side to stop raising exception like:
if(model.MyEmpls !=null){ ... }
And you are getting it null because your MyEmpls is a Custom Class array and you are sending just [].
Hope this helps you.