Is it legal for the company that I work for charge me for the deductable for an accident that ultimately was my fault?

by Russ
(Portland, Oregon)

I recently clipped a low lying tree and did considerable damage to the top front half of a 26ft straight truck.

The total repairs were $1800.00. The company insurance deductible is $1000.00 Is it legal for my company to charge me the $1000.00 deductible from my paycheck?

Please note, that prior to my employment I was forced to sign a waiver stating that I would be charged this deductible if something like this were to happen.