1, the employees of the merged or bankrupt enterprise have not signed a labor contract with the new unit;

2. The employee's unit is revoked;

3. The employee terminates the labor contract with the unit and fails to work again;

4. The employee resigns or is dismissed, dismissed or not re-employed by the unit;

5, workers in prison, reeducation through labor period;

6, approved holdover housing provident fund units within the approved holdover period;

7, other reasons need to be sealed.