You really should read pages 8,9, 10 of this link. I don't know what pertains to you.
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Show posts MenuQuoteYour order will remain as it is until the other parent requests a modification of support. At that time, if you have additional income then you are obliged to disclose this fact, and the court must consider it for the purpose of calculating support.
However, you have considerable negotiating leverage with regard to a second job if you are already working full time, because no court can order a person to work more than 40 hours per week supporting their child (that would be presumptive slavery). Therefore, if the other parent demands support based on the additional job, you can simply state that you will quit and there isn't a damn thing that anyone can about it.
And, once you quit, then the motion to modify would become moot because there would no longer be a change in circumstances (no income change), and the court would be forced to deny the motion.
So, as a practical matter, the answer to your question is NO.