When working with Open Access publications the so-called Open Content licenses are used to set the necessary permissions for the publications to be shared and reused adequately. These are usually standardized licensing models, in which the copyright holders define, under which conditions and in what way their publications may be (re)used. The copyright itself is not restricted in any way by this.
The Creative Commons licenses are built using singular module components. They can be used for textual works, graphics, audio and multimedia formats. The use of the least restrictive licenses (CC0, CC-BY or CC-BY-SA) is advised. Indeed, when working with Open Educational Resouces, only the least restrictive licenses can be used. Other more restrictive licenses should be used if there are clear reasons for using these. However, restrictive licenses often impose (often unintended by the authors) limitations for the (re)use of the works.