Balljoint wear

WHEN I put my 2004 Ford Territory in for brake-hose replacement I was told the bottom balljoints were worn. The car has done only 30,000km and never been off-road. Because the warranty had expired I was told I'd have to pay for the repairs, but after a few calls to the service manager the job was done for labour cost only ($300). Should there also be a recall for balljoints, and on what basis would this be done?