A wage garnishment cannot be accomplished with an application for an earnings withholding order and subsequent issuance of that order. You can determine if one has been issued in your case online if you have a case number. If none has been issued, wage garnishment is not imminent.
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The creditor will not give you advance notice. When the garnishment is served upon your employer, your employer must immediately give you legal forms. Read them. If applicable, file a Claim of Exemption with the Sheriff. There is no fee to file a Claim of Exemption. Unless you file it, 25% of your wages will be garnished.