Document, Document, Document, Pictures and Signatures, a chargeback sheet that states what and any youll be liable for Before, and After you start work, and when you decide to part ways, ALL IN WRITING, I recently had an issue with Penske over this sort of thing and I had taken pictures of my truck, with the date on the pics....after mailing them to Penske and a copy of the damage inspection they backed off, But if you dont have this evidence then you COULD be sued etc....if theres no inspection report and they claim your at fault after your gone, your at risk, possibly but court is expensive and collections even more so....Digital cameras are cheap insurance for any type of documentary evidence.