💸 Can I work cash-in-hand?

Quick answer

No, working cash-in-hand is forbidden — it is illegal for both the worker and the employer. Undeclared work is work not declared to social security: no Dimona declaration, no social-security contributions, income hidden from the tax office. It differs from a genuine favour between friends (spontaneous, occasional, unpaid help), from volunteering, and from regulated association work (art. 17). As a worker you build no social rights (no pension, no health cover), and if you combine it with a benefit you must repay it (the unemployment office recovers up to 3 years back, 5 in case of fraud) and risk a fine and back-tax. For the employer, a missing Dimona is a level-4 offence under the Social Criminal Code: since 1 February 2026 (surcharges ×10) a criminal fine of €6,000 to €60,000 or an administrative one of €3,000 to €30,000, per worker involved, with possible imprisonment.

📋 The rules

Undeclared work = work not declared to social security (no Dimona, no contributions) — illegal
Different from a genuine favour between friends, volunteering or association work (art. 17)
Worker: builds no social rights; combined with a benefit, you must repay it
Recovery of benefits: up to 3 years back, 5 years in case of fraud
Employer: a missing Dimona = level-4 offence, a fine per worker
Since 1 February 2026 (surcharges ×10): level 4 = €6,000–€60,000 criminal / €3,000–€30,000 administrative

🔓 Exceptions

A spontaneous, occasional and unpaid favour between acquaintances is not undeclared work
Volunteering (with capped expense reimbursement) and association work (art. 17) are legal, regulated alternatives

⚠️ Penalties & fines

For the employer, undeclared work is a level-4 offence under the Social Criminal Code: since 1 February 2026, a criminal fine of €6,000 to €60,000 or an administrative one of €3,000 to €30,000, multiplied by the number of workers involved, plus possibly 6 months to 3 years' imprisonment and the loss of social-security reductions. The worker must repay wrongly received benefits and can be fined too. The social-fraud service (SIOD/SIRS) coordinates enforcement.

📎 Official sources

Last verified: 2026-06-20

❓ Frequently asked

Can I do the odd bit of cash-in-hand work?

No. Paid work not declared to social security is undeclared work, even occasionally. A spontaneous, unpaid favour between acquaintances is allowed.

What do I risk as a worker?

You build no social rights, and if you combine undeclared work with a benefit you must repay it (up to 3 years back, 5 in case of fraud) and can get a fine and back-tax.

What does the employer risk?

A missing Dimona is a level-4 offence: since 1 February 2026, a fine of €6,000 to €60,000 (criminal) or €3,000 to €30,000 (administrative) per worker, with possible imprisonment.

Is there a legal alternative?

Yes: volunteering with a capped expense reimbursement, or association work (art. 17) for sport and socio-cultural activities. These do come with their own limits and formalities.

🔎 Common searches

What people search to land here:

“working cash in hand forbidden”
“undeclared work fine employer”
“undeclared work repay benefit”
“favour or undeclared work”
“missing dimona sanction”