Starting a Business While Employed: Cumulation, Leave and Clauses to Check

Quick answer. Yes, an employee can start a business without resigning. The exclusivity clause in their contract is unenforceable for one year in the event of business creation or takeover (Article L1222-5 of the French Labour Code), but the duty of loyalty persists throughout the contract: no competing with or poaching from the employer. With 24 months of seniority, the employee may also request leave or a shift to part-time for business creation, lasting one year and renewable once.

Launching an activity while keeping your job has become a common path. It lets you test a project, build initial turnover and secure your income before any leap to independence. French labour law frames this combination precisely: it authorises it while protecting the employer's legitimate interests.

Three texts structure the topic. Article L1222-5 of the Labour Code temporarily neutralises the exclusivity clause. Articles L3142-105 and following open a right to leave or part-time work for business creation. Finally, the duty of loyalty, of case-law origin, applies even without a written clause. At Hayot Expertise, we observe that most disputes arise not from the creation itself, but from reading the employment contract too quickly.

The principle is clear: an employee can combine their job with an independent activity, whether a micro-enterprise, a single-shareholder simplified company (SASU) or a limited liability company (SARL). No prior employer authorisation is required by default. The employee must nonetheless meet four cumulative conditions drawn from administrative doctrine and case law.

First, the employment contract must not contain an enforceable exclusivity clause. Second, the new activity must not compete with the employer's. It must be carried out outside salaried working hours. Finally, the employee remains bound by a duty of loyalty. Failing these conditions can justify dismissal for gross or serious misconduct.

The choice of structure is not neutral. Before you start, take the time to choose your legal form: the micro-entrepreneur status is often preferred for starting alongside a job, as it limits accounting obligations and only generates contributions when turnover is recorded.

The exclusivity clause prohibits the employee from carrying out another professional activity during the contract. To be valid, it must be essential to protecting the company's legitimate interests, justified by the nature of the task and proportionate to the goal pursued. It cannot be imposed on a part-time employee.

Article L1222-5 of the Labour Code provides a temporary neutralisation. When an employee creates or takes over a business, the employer cannot enforce any exclusivity clause for one year from the creation or takeover, even where a contractual or collective stipulation says otherwise. This protection was clarified by Law no. 2016-1088 of 8 August 2016.

Two important limits. This unenforceability does not apply to travelling salespeople and representatives subject to the exclusivity clause of Article L7313-6. Above all, it is temporary: if the employee obtains an extension of their business-creation leave, the protection extends to the end of that extension, but beyond that the clause becomes fully applicable again. By that deadline, the employee must therefore have either left their job or ceased the competing activity.

This is the most frequently overlooked point. Even without an exclusivity clause, and even during the year of neutralisation, the employee remains bound by a duty of loyalty toward the employer. Article L1222-5 expressly states it: the provision frees from exclusivity, never from loyalty.

In practice, this duty prohibits three behaviours. The employee cannot create a business competing with the employer's during the contract. They cannot divert clientele, poach colleagues or use the employer's resources for personal ends. Nor can they disparage the employer. Conversely, nothing prevents creating a business in a field entirely unrelated to the employer's activity.

Recently, a manager at a consulting firm consulted us after launching a service activity with a former client of their employer, convinced they were protected by the absence of a clause. Yet the duty of loyalty alone was enough to justify termination. We restructured the project onto a distinct market segment to secure the combination. This type of trade-off is as much about law as strategy: the independent consultants we support frequently encounter this boundary.

Articles L3142-105 and following of the Labour Code open a specific right. An employee creating or taking over a business may request either leave or a period of part-time work, subject to a seniority condition.

The minimum seniority required is 24 months, consecutive or not, in the company or a company of the same group. The leave lasts one year at most, extendable by up to one further year, i.e. two years in total, unless a collective agreement sets a different duration. During the leave, the contract is suspended and is in principle unpaid. At the end, the employee returns to their job or a similar one with at least equivalent pay.

Full leave or part-time: comparison table#

Part-time is often the more cautious option: it preserves an income and social cover during the start-up phase, generally the most financially fragile.

Part-time employee. An exclusivity clause can never be imposed on them. They may therefore freely combine activities, subject to loyalty and absence of competition.

Civil servant. The regime is distinct and more restrictive: a public agent must in principle obtain a cumulation authorisation from their administration and, where relevant, refer to the ethics officer. Labour Code rules do not apply.

Creating a company (SASU, SARL). Combination is possible, but the director's social status and the treatment of remuneration differ from the micro-enterprise. For a project set to grow, or to bring several activities together, we sometimes study the opportunity to set up a holding company upstream.

Indemnified jobseeker who finds salaried employment. Combining unemployment benefit (ARE) with activity income follows its own rules, distinct from those of an employee in post.

First pitfall: confusing the absence of an exclusivity clause with total freedom. The duty of loyalty remains and is enough to justify dismissal in case of competition.

Second pitfall: forgetting the deadline of the year of unenforceability. After that, the exclusivity clause regains full force. Plan your exit or the cessation of the competing activity.

Third pitfall for jobseekers who create: since 1 April 2025, combining ARE with business income is capped at 60% of the remaining rights capital at the creation date. The ARCE, a lump-sum alternative, equals 60% of the remaining ARE rights, after a 3% deduction for supplementary pension, paid in two instalments.

Fourth pitfall: ACRE is no longer automatic. Since 1 January 2026, the application must be filed with Urssaf within 60 days of starting the activity, and the scheme is reserved for certain groups (jobseekers, under-26s, recipients of minimum social benefits, founders in priority urban or rural zones). An employee in post who resigns to create is generally not eligible.

Combining employment and entrepreneurship is an excellent testing ground, provided the legal side is secured before the financial one. In our business-creation engagements, we always start by re-reading the employment contract: exclusivity clause, post-contractual non-compete clause, scope of the employer's activity. That reading determines the real room for manoeuvre, far more than the choice of status.

Our conviction, forged through supporting liberal professions and freelancers at launch: the risk is almost never tax-related at the start, it is contractual and social. A legally well-framed project develops calmly; a project launched in the blind spot of the employment contract exposes one to abrupt termination, sometimes before the first euro of profit. As accountants registered with the Ordre, we systematically link the employment-contract dimension and the creation dimension, where many founders treat them separately.

Hayot Expertise advice. Before any step, have your employment contract reviewed and verify the exact scope of your employer's activity. Favour a light first status (micro-enterprise) to test, work strictly outside working hours, and document the absence of competition. If the project takes off, we then structure the transition, the move to a company or the negotiation of a mutual-agreement termination at the right time.