The company told the state the cuts will start in mid-June.
In a bankruptcy filing last week, Oberweis said it has more than $4 million in debt.
Among the creditors the company owes money to is the Cook County Treasurer, to which Oberweis owes just over $173,000, documents show.
The owners of Oberweis Dairy are related to Illinois Republican politician Jim Oberweis.
ABC7 reached out to Oberweis for comment, did not immediately hear back.