What are the legal implications of "White Labeling" your work for a larger agency?

[Btaliat]

In this case, it is always a better idea to make sure that you have a better and solid agreement and understanding. This is because white labelling include allowing your work to be sold under another brand. This means it involves the freelancers selling their intellectual property to another company. This means the new company can now sell their products without any legal implications. What do you think about this? Have you done it before?