Yes, if they have gotten a court ordered "writ of garnishment" it would apply to all assets a debtor has or is due. (wages, bank accounts, investment accounts, stocks, bonds, etc.)
Oregon procedures and law on the topic:
To be valid, a writ of garnishment must be delivered to the garnishee either by certified mail, return receipt requested or in person. Or. Rev. Statute. Ann. _ 29.165. If the property is held by a financial institution, property shall be garnished by delivering the writ of garnishment to the manager, assistant manager or other designated person at any office or branch of the financial institution where deposits are received or that has been designated by the institution as a place for delivery of writs of garnishment.
Delivery of a writ of garnishment to the manager, assistant manager or other designated person at an office or branch of the financial institution described in this paragraph is effective to garnish all property of the defendant held at all offices and branches of the financial institution located in the Statutee. Or. Rev. Statute. Ann. _ 29.185.
Delivery of a writ of garnishment shall be effective to garnish all property of the defendant which is in the garnishee's possession, control or custody at the time of delivery of the writ of garnishment to the garnishee, including but not limited to property in safe deposit boxes, stock, debts and other obligations then in existence and payable in money, whether due or to become due, property held on expired and unexpired bailments and leases, and property held by the garnishee pursuant to a security interest granted by defendant to garnishee.
In addition to such rights as the garnishee may have at law, in equity or otherwise, if the garnishee is a financial institution, the garnishee may, following delivery of a writ of garnishment to the garnishee, set off such sums as are due from defendant at the time the garnishee receives the writ of garnishment. Or. Rev. Statute. Ann. _ 29.205.
Following delivery of a writ of garnishment to a garnishee, the person or sheriff who mailed or delivered the writ of garnishment shall promptly mail or deliver a copy of the writ of garnishment together with the notice of exemptions and claim form to each defendant whose property is being garnished by said writ. Or. Rev. Statute. Ann. _ 29.215.
Where the garnishee charges such a garnishment processing fee, the garnishee may collect the fee by deducting the amount thereof from any debt the garnishee owes to the defendant. Or. Rev. Statute. Ann. _ 29.377.
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