Well, to cover his car's repair,

My insurance will pay 100%.  however, there is a line for cost above USD499.99.  I do not have to pay additional money to my premier if the cost is below USD499.99.  If it exceeds 499.99, say, USD500, I will have to pay over 500 dollars additional fee a year for 6 years, which equals to over 3,000 dollars.  There is a risk if I let this guy do what he is doing.  The damage on the rim has nothing to do with me at all. 

The reason all my co-workers suggest that I seek for help from HR is to question the honesty of this person.  Because this issue has had big impact on my work ever since I saw the quote and I worry everyday now about that potential 3,000 dollars.  Basically, I was suggested to file a claim about unpleasant working environment again that guy.  I am just not sure whether this is common or not.