It depends, but the fact that the productive keep on inventing new ways to be even more productive, then yes the economy may shed a few jobs and still grow.
We could increase production using current technologies, such as placing RFID tags on goods that either can be shed with the box or dissolves in a water solution for cleaning. That way cashier positions could be eliminated and checkout would be much faster.
Of course, then what we do with all those out of work cashiers?