Are McDonalds in Denmark franchises, or corporate owned? In the US, they are francheses owned by individuals, so painting it as a Worker vs BigCorp issue is a little disingenuous.
But even in franchises McDonalds keeps a tight leash on many aspects of the business (menus, processes, ingredients, and many labor standards), and so in many ways corporate McDonalds is responsible (practically, even if they argue not legally) for the operations at even the franchises.
Interestingly, in the U.S., McDonalds owns most of the land under the franchise restaurants, and actually earns more if its profits on rent than on franchise fees or selling ingredients: https://www.wallstreetsurvivor.com/mcdonalds-beyond-the-burg...
Mostly. A bit under 10% of all McDonalds locations in the US are corporate owned.