| A standard case | The period of 6 months beginning with the last day of the employment or appointment. |
| A stable work case (but not if it is also a concealment or incapacity case (or both)) | The period of 6 months beginning with the day on which the stable working relationship ended. |
| A concealment case (but not if it is also an incapacity case) | The period of 6 months beginning with the day on which the worker discovered (or could with reasonable diligence have discovered) the qualifying fact. |
| An incapacity case (but not if it is also a concealment case) | The period of 6 months beginning with the day on which the worker ceased to have the incapacity. |
| A case which is a concealment case and an incapacity case. | The period of 6 months beginning with the later of the days on which the period would begin if the case were merely a concealment or incapacity case. |