You need to specify what table you are deleting from, here is a version with an alias:

DELETE w

FROM WorkRecord2 w

INNER JOIN Employee e

  ON EmployeeRun=EmployeeNo

WHERE Company = '' AND Date = '2013-05-06'

SQL Server不支持一次删除多张表中的数据

https://stackoverflow.com/questions/783726/how-do-i-delete-from-multiple-tables-using-inner-join-in-sql-server

You can take advantage of the "deleted" pseudo table in this example. Something like:

begin transaction;

   declare @deletedIds table ( id int );

   delete t1

   output deleted.id into @deletedIds

   from table1 t1

    join table2 t2

      on t2.id = t1.id

    join table3 t3

      on t3.id = t2.id;

   delete t2

   from table2 t2

    join @deletedIds d

      on d.id = t2.id;

   delete t3

   from table3 t3 ...

commit transaction;

Obviously you can do an 'output deleted.' on the second delete as well, if you needed something to join on for the third table.

As a side note, you can also do inserted.* on an insert statement, and both inserted.* and deleted.* on an update statement.

EDIT: Also, have you considered adding a trigger on table1 to delete from table2 + 3? You'll be inside of an implicit transaction, and will also have the "inserted." and "deleted." pseudo-tables available.