INAIL: When You Are Required to Register for Workplace-Injury Insurance

In a nutshell

INAIL (Italy's workplace-injury insurance institute) is the public body that insures workers against occupational accidents and occupational diseases. If you have employees, run a trade as a self-employed artisan, or have partners who do physical work in the business, registering with INAIL is not optional — it is a legal obligation. Failing to do so can result in heavy fines and, in the event of a workplace accident, makes the employer personally liable for damages.

At a glance

Cost to register	Free. Annual premium varies: roughly 4 to over 130 per thousand of insurable payroll (average for trades ~32‰, service sector ~10‰).
Timing	Registration notice (denuncia di esercizio) must be submitted by midnight the day before you start operating. Your company code and PAT (territorial insurance position) are issued within a few working days.
Where in Rome	Everything online at inail.it. In-person counters by appointment (Roma Centro, Tuscolano, Casilino, Aurelio).
Documents needed	SPID, CIE, or CNS; business details (ATECO sector code, premises, number of workers, estimated payroll).

Who must register with INAIL

The governing legislation is DPR 1124/1965 (the consolidated Workplace Injuries Act). Registration is compulsory for:

• Private employers with at least one employed worker: permanent or fixed-term contracts, part-time, apprentices, or on-call (lavoratori intermittenti) staff.
• Employers with co.co.co. collaborators (collaboratori coordinati e continuativi — a semi-employed contract) engaged in hazardous activities.
• Self-employed artisans (artigiani titolari) registered with the Albo Imprese Artigiane (Register of Craft Businesses): they insure themselves and any family members who work in the business on a regular basis.
• Partners of companies (Srl, Snc, Sas, cooperatives) who carry out manual work or operate machinery.
• Co-working family members (familiari coadiuvanti) — spouse, children, parents — who contribute on a regular basis.
• Interns and trainees, even unpaid ones: the insurance cost falls on the host organisation.
• Occasional workers paid through the PrestO voucher or the Libretto di Famiglia (domestic-work booklet).

A less obvious case worth noting: remote workers and smart workers are also covered. The policy follows the worker, including work done from home.

Who is not required to register

Intellectual-profession freelancers who work alone, do not use hazardous machinery, and have no employees are exempt: lawyers, accountants, engineers, architects, doctors, consultants, surveyors, notaries. The same applies to freelancers in the regime forfettario (Italy's flat-rate tax scheme for sole traders) who work without collaborators.

Important caveat: the exemption disappears the moment you hire even a single collaborator or intern, or begin using equipment classified as hazardous (radiology, professional lasers, cranes, etc.).

Company owners in commercial or industrial businesses who handle only management functions and do no manual work are not obliged to register for themselves personally — but they remain fully obliged to insure any employees they have.

How to register: step by step

Step 1 — Prerequisites. Open a Partita IVA (Italian VAT number — required to invoice as a self-employed worker) with Agenzia delle Entrate (Italy's tax-revenue agency) and obtain registration in the Registro Imprese (Companies Register) at the Rome Chamber of Commerce.

Step 2 — Registration notice (denuncia di esercizio). Go to inail.it using SPID, CIE, or CNS. Under Servizi per le aziende (Business services) find the Denuncia di iscrizione (Registration notice) section. The online form asks for: owner or company details, registered address and all operating premises (each location gets its own Posizione Assicurativa Territoriale — PAT, the territorial insurance sub-account), the ATECO sector code with a concrete description of the work carried out, the expected number of workers, and the estimated payroll for year one. On submission you immediately receive your company code (codice ditta) and PAT number.

The deadline is strict: the notice must be filed by midnight the day before operations begin.

Step 3 — Paying the premium. INAIL calculates the annual premium and you pay it via F24 (the universal Italian payment form for taxes and contributions). The standard deadline is 16 February each year (autoliquidazione — self-assessed annual payment). You can split it into four quarterly instalments (16 February, 16 May, 20 August, 16 November) with a small interest surcharge.

Obligation	Deadline
Registration notice	Midnight the day before starting
Annual self-assessed payment	16 February
Changes (new premises, new activities, closure)	Within 30 days of the change
Accident report (prognosis > 3 days)	Within 2 days of the medical certificate
Fatal accident report	Within 24 hours

What the premium costs

The calculation is straightforward: premium = annual insurable payroll × rate per thousand. The rate depends on the insurance category and the specific type of work, as defined by DM 27/02/2019 (INAIL Premium Rates schedule).

Activity	Average rate (‰)
Office work (clerical staff)	~4
Clothing retail	~9
Bar / café	~13
Hairdresser / beauty therapist	~14
Restaurant / pizzeria	~17
Road haulage	~45
Electrician	~50
Carpentry	~55
Plumber	~62
Painter / decorator	~67
General construction	~92

Worked example. A restaurant with 3 employees, total payroll €66,000, rate 17‰: annual premium = 66,000 × 17 / 1,000 = €1,122. A self-employed plumber with no employees, standard notional payroll ~€16,500, rate 62‰: premium ≈ €1,023.

You can reduce the premium: after two years with no accidents, the discount can reach 28%. Investing in safety (training courses, personal protective equipment, ISO 45001 certification) and submitting the OT/23 form by 28 February can unlock a further reduction of up to 28%.

Mistakes to avoid

1. "I only have one employee for a few months — surely that doesn't count." The obligation kicks in from the very first day of any employment relationship. There is no minimum duration or headcount threshold.
2. "I'm on the regime forfettario, so I'm exempt." Your tax regime has nothing to do with INAIL. If you are a self-employed artisan under the flat-rate scheme, you are still obliged to register. If you are an intellectual-profession freelancer you are exempt — but because of your profession, not because of your tax regime.
3. "I opened a new office but haven't updated my PAT." Every new premises or change of activity requires a variation notice within 30 days. Each PAT must accurately reflect actual operations.

Special cases

Managing director (socio amministratore) of an Srl with no manual role. If you handle only management and do not use machinery or carry out physical work, you are not personally subject to the obligation. The company still has to insure its employees.

Domestic workers (housekeepers, carers). Their insurance is handled through INPS (Italy's social-security agency) under an integrated arrangement — you do not need to open a separate INAIL position.

Business with multiple Rome premises. Each operating site gets its own PAT. You can register all of them in a single session on the portal during the initial registration filing.

If you fail to register and have uninsured workers, fines range from €1,290 to €7,745 for failing to file, with a super-fine of up to €36,000 per undeclared worker found during an inspection. In the event of a serious or fatal accident, the employer faces personal civil liability and can be criminally charged with negligent bodily harm or manslaughter.

Official sources

• INAIL — When to insure
• INAIL — Employer section
• INAIL — Artisans section
• INAIL — Registration notice
• INAIL — Premium rates
• INAIL — Counters and contacts

Legal references: DPR 1124/1965, DLgs 38/2000, DLgs 81/2008, DM 27/02/2019, Legge 296/2006 art. 1 c. 1213.