Invalid column name when using Entity Framework Core Table Per Hierarchy Inheritance

Question

I am new to EF Core and am trying to use TPH Inheritance with Entity Framework Core

I have the following classes defined

    public class WorkItem {
        public Guid Id { get; set; }
        public string WorkItemType { get; set; }
        public string Description { get; set; }
    }
    public class Job : WorkItem {
        public string BillingNotes { get; set; }
    }

In my context, I have

    public class JobContextNew : DbContext {
        public virtual DbSet<WorkItem> WorkItem { get; set; }
        public virtual DbSet<Job> Job { get; set; }

        public JobContextNew(DbContextOptions<JobContextNew> options) : base(options) { }

        protected override void OnModelCreating(ModelBuilder modelBuilder) {
            modelBuilder.Entity<WorkItem>(entity => entity.Property(e => e.Id).ValueGeneratedNever());
            modelBuilder.Entity<WorkItem>()
                .HasDiscriminator(workitem => workitem.WorkItemType)
                .HasValue<Job>(nameof(Job));
        }
    }

If I omit the field in Job, it will pull the data just fine but when I add the BillngNotes back in I get the following error: Invalid column name 'BillingNotes

Can anyone tell me what I might be doing wrong?