Can I license a work created with other people?

Yes, but only with the written agreement of every person whose copyright rights are at stake. A single co-creator cannot license a joint work under a Creative Commons license unless all joint authors agree. Joint ownership under copyright law means each author holds an undivided share. Licensing without permission from all co-owners exposes the licensor and every downstream user to infringement claims. Get a written agreement signed by every contributor that names the exact CC license, the version (4.0), and the scope of permitted uses.

Copyright law treats a work created by two or more people as a joint work unless an agreement says otherwise. Each joint author has an equal right to exploit the work non-exclusively, but licensing under a Creative Commons tool changes the legal conditions permanently for reusers worldwide. Every co-author must agree to the specific license terms, BY, SA, NC, ND, and to the version, because the 4.0 license conditions are a binding offer to anyone. A single dissenting author can block the whole license.

If one author applies a CC license to a joint work without the others' knowledge, the license is not valid for that author's share. The Creative Commons FAQ states that the organisation does not verify ownership and is not a party to individual licenses. A reuser who relies on that invalid license risks infringement. The failure case: the objecting co-author sends a takedown notice or sues for unauthorised use, and the reuser has no defence.

Employment changes the picture. Under many national copyright laws, a work created by an employee within the scope of employment is owned by the employer, not the employee. The employer is the copyright holder and the only person who can apply a Creative Commons license. The employee has no standing to license or block a license of that work.

Commissioned works are different. A freelance photographer, a hired developer, or a contractor usually retains copyright unless a written contract assigns it to the commissioning party. Read the contract. If it says "work made for hire" or "all rights transferred," the commissioner controls licensing. If it says nothing, the creator controls it, and you need their agreement to license a joint work that includes their contribution.

A contributor agreement is the best way to get permission in advance. The agreement should state that each contributor grants the project lead the authority to license the combined work under a specific Creative Commons license, version 4.0. It should also say that any contributor may withdraw from future versions but cannot revoke the license for copies already distributed. That matches how a 4.0 license works: irrevocable once the work is shared with compliant reusers.

Without a signed agreement, you need explicit permission from every living co-author. Email confirmation naming the exact license and version works. A verbal agreement is nearly impossible to prove. If one co-author is unreachable, you cannot license the joint work under a CC license until you locate them or obtain a legal determination of their share.

Once you have permission from all co-authors, mark the work clearly. The marking must follow the 4.0 attribution requirements. Use this workflow.

Choose The License

Confirm every agreeing co-author accepts the same license. If one wants NC and another wants BY-SA, you cannot license the joint work under either until you resolve the conflict. The only option is a license that satisfies both conditions, which may be impossible if one insists on ND and another wants derivatives allowed. In that case, the joint work cannot be CC-licensed without further negotiation.

Write The License Notice

Include all required elements from the 4.0 legal code: creator identification (all co-authors), a copyright notice, a referral to the license, and a URI to the license deed. Copyable example for a joint photograph by three people:

"© 2026 Ana Martinez, Ben Chen, and Clara Osei. This work is licensed under CC BY 4.0. To view a copy of the license, visit the official CC BY 4.0 deed."

Example for a collaborative video with five contributors:

"© 2026 The Rainbow Collective. All five members (listed at credits.rainbowcollective.org) hold copyright. This work is licensed under CC BY-SA 4.0. License deed: the official CC BY-SA 4.0 deed."

Exclude Third-Party Material

If the joint work contains third-party material, a sample, a stock photo, a clip from another work, that material is not covered by your joint license unless its creator also agrees. State the exclusion in the notice. Example: "Background music by DJ Xander used with permission, not CC-licensed. All other content licensed under CC BY 4.0." Do not imply the third-party element is freely reusable. The Creative Commons marking practices page recommends a clear statement of what is not covered.

Indicate Modifications

If the work is an adaptation of an earlier work, you must indicate that it is adapted material. Example: "Adapted from 'Sunset Over Kilimanjaro' by Grace Wanjiku, CC BY 4.0. New material licensed under CC BY-SA 4.0." The 4.0 legal code requires that modification notices be preserved when the adapted work is shared.

Third-party material embedded in your joint work is not automatically licensed by your Creative Commons notice. The 4.0 license covers only what the licensor controls. If a photograph in your documentary was shot by someone who did not sign a contributor agreement, that photograph cannot be distributed under your CC license. Remove it, get separate permission, or replace it with material you control.

For stock assets under a CC license, verify the exact terms. A photo marked CC BY-ND 4.0 cannot be included in a joint work that you plan to license as CC BY-SA, because the ND condition prohibits sharing adaptations. You would need to use that photo only in a way that does not create adapted material, or find a substitute under a compatible license. The official compatibility list on the Creative Commons site shows which licenses work together. Two SA licenses are not automatically compatible; you must check the chart.

The failure case: a reuser downloads your joint work, trusts your CC notice, and later finds that a third-party clip was not licensed. The reuser faces the legal consequences, and your license notice did not protect them. Write the exclusion clearly.