Westland Milk is looking to suspend milk collection from dairy farms operated by Gloriavale.
Last week the Employment Court ruled that members of the Christian community who worked up to 70 hours a week for years were not volunteers.
This opens the door for the labour inspectorate to enforce minimum employment standards in the community.
Westland Dairy Company chief executive Richard Wyeth welcomed the court's decisions and said the company was committed to the rights of children and the freedom and dignity of everyone involved in its supply chains.