A wage garnishment lasts for one year. The calculations at the beginning of the garnishment about how much you have in wages, how much can be taken, and how much you must be left, will cover the entire year. You should not need to file additional papers unless something changes.
If your wages change significantly during the year, you must report this to the court.
Suppose your wages are high enough that the garnishment is taking some money. Then your wages go down. If your employer takes out too much from your lower wages, you should file proof of your reduced wages with the court and ask for a “modification” in order to get the protections calculated correctly.
Suppose your wages are low enough that the garnishment cannot take any money. But then your earnings go up. The employer should adjust the amount being taken out from your higher wages. If the employer takes too much out from your higher wages, you should file proof of your wages with the court and ask for a “modification” in order to get the protections calculated correctly.
If the judgment order is not paid off in full by the end of 12 months, the creditor can file a new garnishment. The whole process will then repeat itself. The new garnishment will be valid for up to one year. The protections should be applied automatically. If the protections are not applied correctly so that too much is taken from your paycheck, you should file a request to modify the garnishment along with proof of your wages.