Save Sql error message in table

See more:

SQL-Server-2008R2

Hi I am using a stored procedure which migrates an old record of a table (eg. Employee) to another table(eg. MigratedEmployee). For that I am using a stored procedure with try and catch...
I need to save the message that comes in ERROR_MESSAGE() in my table MigratedEmployee incase the INSERT fails...
How to do that??

CREATE PROCEDURE MigrateEmployee
-- Add the parameters for the stored procedure here
AS
BEGIN

DECLARE @errorMessage aS VARCHAR(MAX)
	-- SET NOCOUNT ON added to prevent extra result sets from
	-- interfering with SELECT statements.
	SET NOCOUNT ON;
    -- Insert statements for procedure here
	BEGIN TRY 
	--Insert record to Migrated Table
	END TRY
	BEGIN CATCH
	END CATCH
	--Insert record to Migrated table with error message
	END

Table A: Employee
Emp_Id | Emp_Name | Emp_Dept | Emp_IsActive
___________________________________________
Table B: MigratedEmployee
Emp_Id | Emp_NAme | Emp_Dept | Emp_IsActive | isActionFail | ErrorMessage
______________________________________________________________________


Please help