Hidden work in France refers to two main scenarios: the concealment of a business activity and the concealment of salaried employment. In the first case, self-employed workers may deliberately avoid declaring part of their income or continue working after being removed from social protection systems. This includes activities such as producing goods, repairing items, providing services, or engaging in commercial acts without proper declarations. The concealment can be complete or only partial, such as when only a portion of the revenue is unreported. In the second case, hidden work involves employers who intentionally fail to declare employment, issue pay slips, or report salaries and social contributions. This situation is governed by Article L8221-5 of the Labor Code, which distinguishes it from the concealment of an activity by self-employed workers. Employers who do not fulfill these obligations can face legal consequences. URSSAF, the French organization responsible for collecting social contributions and taxes, conducts inspections that can lead to significant financial repercussions. If hidden work is discovered, the organization may calculate the amount of unpaid contributions and taxes, apply additional charges, and impose penalties if applicable. Any reductions or exemptions the individual or company may have received could also be revoked. URSSAF may use a flat-rate method to determine the amount owed, which can be contested if it results in higher charges than warranted. Hidden work also carries legal penalties. Under Article L8221-1 of the Labor Code, individuals found guilty of concealing work or using the services of someone engaged in hidden work can face up to three years in prison and a fine of 45,000 euros. For companies, the fine can be as high as 225,000 euros, with harsher penalties for organized groups or aggravating circumstances. Additionally, if an employer uses a subcontractor engaged in hidden work, they may be held responsible under a duty of vigilance, provided the contract is worth at least 5,000 euros. When faced with an inspection or summons related to hidden work, it is crucial to carefully examine the nature of the activity in question, the time period involved, the declaration obligations that may have been evaded, and the calculation of any rectification or surcharge. Individuals and companies should also be aware of any potential legal implications. If a report is issued, it should clearly outline the period in question, the observed facts, the evaluation of unpaid contributions, and the available options for appeal. Understanding these elements is essential for defending one’s rights during an inspection.