PLEASE HELP ME: SqlDateTime Overflow. Must Be Between 1/1/1753 12:00:00 AM And 12/31/9999 11:59:59 PM.

I cannot for the life of me figure out why im still getting this
error. I have tried everything i can think of from using dbnull.value
to setDOBnull() to datetime.minvalue. Can anyone help me?
 
Here's the code on my BLL:
   
Public Function AddEmployee(ByVal SSN As String, ByVal FirstName As
String, ByVal LastName As String, ByVal PreferredName As String, ByVal
MaidenName As String, ByVal MaritalStatus As Nullable(Of Char), ByVal
DOB As Nullable(Of Date), ByVal Gender As Nullable(Of Char), ByVal
Ethnicity As String, ByVal StartDate As Nullable(Of Date), ByVal
TerminationDate As Nullable(Of Date)) As Boolean

        ' Create a new employeeRow instance
        Dim employees As New HRMS.EmployeesDataTable()
        Dim employee As HRMS.EmployeesRow = employees.NewEmployeesRow()
        Dim sqldatenull As SqlDateTime
        sqldatenull = SqlDateTime.MinValue.Value

        employee.SSN = SSN
        employee.FirstName = FirstName
        employee.LastName = LastName

        If PreferredName Is Nothing Then employee.SetPreferredNameNull() Else employee.PreferredName = PreferredName
        If MaidenName Is Nothing Then employee.SetMaidenNameNull() Else employee.MaidenName = MaidenName
        If Not MaritalStatus.HasValue Then employee.SetMaritalStatusNull() Else employee.MaritalStatus = MaritalStatus.Value
        If Not DOB.HasValue Then employee.SetDOBNull() Else employee.DOB = DOB.Value
        If Not Gender.HasValue Then employee.SetGenderNull() Else employee.Gender = Gender.Value
        If Ethnicity Is Nothing Then employee.SetEthnicityNull() Else employee.Ethnicity = Ethnicity
       
If StartDate = DateTime.MinValue Then employee.StartDate =
SqlDateTime.MinValue.Value Else employee.StartDate = StartDate.Value
        'If StartDate = DateTime.MinValue Then employee.SetDOBNull() Else employee.StartDate = StartDate.Value
        'If Not StartDate.HasValue Then employee.StartDate = sqldatenull Else employee.StartDate = StartDate.Value
       
If TerminationDate = DateTime.MinValue Then employee.TerminationDate =
SqlDateTime.MinValue.Value Else employee.TerminationDate =
TerminationDate.Value P