Write SQL query to solve given problem: As of 12/31/2011, how long has the employee assigned to all pending for approval papers been working in the company from the date he was hired?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT 2011 - STRFTIME('%Y', T2.HireDate) FROM Document AS T1 INNER JOIN Employee AS T2 ON T1.Owner = T2.BusinessEntityID WHERE T1.Status = 1