Avoir un Side Project en CDI c'est illégal ?

Avoir un Side Project en CDI c'est illégal ?

Is It Illegal to Have a Side Project While Employed Full-Time?

Title history
  • Avoir un Side Project en CDI c'est illégal ? — observed on 20261101-0056 UTC (YouTube)

by Arthur (DevArt) · View the channel on PSI

Humanities, Social Sciences & Thought Law & Justice LNHEmployment and labour law: generalLNHUEmployment contracts
🎙 Arthur (DevArt) 👥 19K 📅 August 7, 2026 ⏱ 15 min 👁 15K 📄 expert opinion 🧭 2026-11-01
Available in: English (current) Français

Keywords

side projectCDIemployment contractintellectual propertytransparency

Summary

The video discusses the legal and professional risks of maintaining a side project while working under a permanent contract (CDI) in France. The creator, a software developer with a YouTube channel, explains that contracts often contain clauses granting employers rights to creations made using company resources or knowledge gained on the job. He cautions against using work equipment or AI tools for personal projects, as that can constitute serious misconduct. He advises reviewing one’s contract carefully, being transparent with employers before signing, and obtaining written confirmation about permitted activities. The creator shares his own experience of informing employers about his YouTube channel, which has been accepted as long as it does not interfere with his duties. He also mentions that conflicts can arise if a side project resembles the employer’s business, and that employers may use undisclosed activities in disputes. He ultimately recommends transparency and consulting legal help if needed, while also emphasizing the career benefits of staying visible through side projects.

162 words

Critical Evaluation

Value of the Information & Strength of the Argument

The video provides practical, actionable advice for developers and professionals considering side projects. Its value lies in highlighting concrete legal risks (intellectual property clauses, misuse of company resources) and the importance of contractual awareness. The argumentation is coherent and based on personal anecdotes and industry common sense, though it lacks legal citations or statistical evidence. The creator’s emphasis on transparency and proactive communication is persuasive, and he acknowledges the trade-off between hiding activities and building trust. The reasoning is straightforward and accessible, but it is not a rigorous legal analysis, relying instead on experiential knowledge.

Scientific Rigor, Source Quality, Title Accuracy

The video does not cite specific legal texts or case law, so its scientific rigor is limited. The creator acknowledges he is not a lawyer and only shares personal experience. The sources mentioned are entirely from the video description, consisting of related videos on tech topics and a link to his own project; none are authoritative legal references. The title accurately matches the content, as the video directly responds to the legality question with conditional explanations. No scientific or journalistic sources are used, which lowers the reliability score but is appropriate given the informal, advisory nature of the video.

209 words

Title / Content Match

The title is directly addressed; the video explains that legal exposure depends on factors like contract terms, the nature of the side project, and employer awareness.

Quality & Reliability

5/10

The advice is based on personal experience and practical observations rather than legal scholarship, but it is honest and covers common pitfalls such as contract clauses, use of company resources, and employer notification.

Key Moments

Markers derived by PSI from the transcript: the creator did not define chapters.

Cited Sources

Contribution & Novelties

The video offers a practical, experience-based perspective on a common concern among tech employees, filling a gap in accessible advice about French employment contracts and side projects. It emphasizes the importance of transparency and contract review, and warns against common pitfalls such as using company resources. While not scientifically rigorous, it provides a useful checklist for developers.

Pour aller plus loin :

91 words

Radar Profile

The radar profile shows moderate scores in information quantity and quality, but low technical depth and moderate reliability. This reflects the video's nature as an opinion-based advisory talk with practical examples rather than a technical or legal deep dive.

Reliability 4/10