Welder — Mig Mag · Finland

By Tanishq Chauhan · Reviewed by Bayswater Compliance Desk · Updated April 2026

Country Code: FI Profession Category: Metal Fabrication Specialization: Levyseppähitsaaja (Plater-Welder) - 135/136 Last Updated: February 2026 Regulatory Complexity: High (SFS-EN 1090, CE Marking) Document Maturity: Gold Standard (Hard Reset)

Executive Summary

The Levyseppähitsaaja in Finland is not just a “trigger puller.” They are often responsible for the CE marking audit trail of the steel structure. Working under SFS-EN 1090-2, they must strictly adhere to the WPS (Welding Procedure Specification). A welder who uses the wrong gas, ignores pre-heat, or welds over mill scale is endangering the bridge or beam they are building. The standard is X-ray quality and full traceability.

Finland is a unitary parliamentary republic and a Nordic constitutional democracy that acceded to the European Union on 1 January 1995 and has been a Schengen Member State since 25 March 2001. Labour and immigration legislation is codified at national level by the Eduskunta, with statutes published in the Suomen säädöskokoelma and consolidated through the public legal database at https://www.finlex.fi. Implementing regulation issues from valtioneuvosto (Government) and from sectoral ministries — principally työ- ja elinkeinoministeriö (TEM), sosiaali- ja terveysministeriö (STM), and sisäministeriö. The Åland Islands hold devolved competence in some areas but do not vary work-permit thresholds or posted-worker rules.

The defining structural feature of the Finnish labour regime is, as in Sweden, the absence of a statutory minimum wage. Wage-setting is delegated to sector-specific collective bargaining agreements (työehtosopimus, TES). Unlike Sweden, Finland operates an active erga omnes extension mechanism: a TES meeting the representativeness threshold under the Työehtosopimuslaki (436/1946) and Työsopimuslaki (55/2001, chapter 2 §7) is declared yleissitova (universally binding) by the työehtosopimuksen yleissitovuuden vahvistamislautakunta. The principal construction-sector instrument, Rakennusalan työehtosopimus (Rakennusalan TES, concluded between Rakennusliitto and Rakennusteollisuus RT), is universally binding, with the consequence that all employers — domestic and foreign — engaging construction workers on Finnish soil must apply its terms as the floor.

The regime has been modernised through several discrete reforms. The Tilaajavastuulaki (Act on the Contractor’s Obligations and Liability when Work is Contracted Out, 1233/2006), in force since 1 January 2007 and amended in 2012 and 2015, imposes pre-contract due-diligence obligations on principals regarding the tax, social-security, and CBA position of every sub-contractor. The Veronumero (tax number) regime, enacted via Act 363/2012, has required every worker on a Finnish construction site to display a personal tax number on a photo-bearing identity card since 1 September 2012, with the public Veronumerorekisteri operative since 1 March 2013. The Migri work-permit reform of 2023-2024, enacted through amendments to the Ulkomaalaislaki (301/2004), compressed processing for the Erityisasiantuntija (Specialist) permit and introduced the Sertifioitu työnantaja (Certified Employer) track.

Primary supervisory authorities are: Maahanmuuttovirasto (Migri) at https://migri.fi; aluehallintovirasto (AVI, Regional State Administrative Agency) at https://avi.fi with the occupational-safety portal at https://www.tyosuojelu.fi; Verohallinto at https://www.vero.fi; Kansaneläkelaitos (Kela) at https://www.kela.fi; Eläketurvakeskus (ETK) at https://www.etk.fi; and Tapaturmavakuutuskeskus (TVK, formerly VKK) at https://www.tvk.fi.

Role Scope & Industry Reality

Core Duties

• Process 135/136: Solid wire (MAG) and Flux-cored welding on Structural Steel (S355).
• Fabrication: Reading drawings, cutting, assembly using magnetic drills/saws.
• Standard Compliance: Welding to Execution Classes EXC2/EXC3.
• Multi-Pass: Heavy plate welding (10mm - 40mm) with ultrasonic testing (UT).
• Safety: Hot work permit (Tulityökortti) compliance.

Typical Roles

• Levyseppähitsaaja: Combined Plater/Welder (Most common).
• Hitsaaja: Pure welder (Production line).
• Robottihitsaaja: Robot operator (distinct skill).

Out of Scope

• TIG: “TIG-hitsaaja” is a different trade (usually pipe).
• Under-water: Specialized diver.

Qualification & Experience Benchmarks

Career Progression

• Aloittelija: Tacking, simple down-hand welds.
• Ammattilainen: All positions (PF/PE), heavy plate, full penetration.
• Luokkahitsaaja: Certified welder (valid certificates).

”Senior” Reality

• A senior Finnish welder checks the Execution Class (EXC) on the drawing before turning on the machine. He knows that EXC3 requires strictly controlled heat input and interpass temperature. He cleans his spatter because he knows the inspector (NDT) charges by the hour.

Finland does not operate a closed-trade Meisterzwang regime equivalent to Germany’s Handwerksordnung. Vocational education through the ammatillinen perustutkinto in rakennusala under Laki ammatillisesta koulutuksesta (531/2017) is the customary route to journeyman classification but is not a statutory bar for most building trades. Bricklayers (muurarit), carpenters (kirvesmiehet), formworkers, ironworkers (raudoittajat), concrete workers, plasterers (rappaajat), and general operatives (rakennusmiehet) may be engaged on the strength of demonstrated competence plus the mandatory site-access certifications below.

The defining trade-restriction layer in Finnish construction is administrative and certification-based. Three instruments are mandatory:

1. Veronumero (tax number). Every person performing work on a Finnish construction site must hold a personal Veronumero issued by Verohallinto under the Verotusmenettelylaki amendments (Act 363/2012), displayed on a photographic identity card. The number is recorded in the public Veronumerorekisteri (https://www.vero.fi/en/individuals/tax-cards-and-tax-returns/arriving_in_finland/work_in_finland/working-on-a-construction-site/). Foreign workers obtain the number at a Verohallinto service point. Without a Veronumero no work may lawfully be performed and the principal is liable to a Verohallinto control fee.

2. Valttikortti (Valtti card). Administered by Suomen Tilaajavastuu Oy (https://www.tilaajavastuu.fi/en/valtti-card/), Valttikortti is the dominant electronic site-access ID card. It encodes worker identity, photograph, Veronumero, employer, and validity, and is read by site turnstiles. It is contractually required by virtually every main contractor (YIT, Skanska, NCC, SRV, Fira, Lujatalo, Hartela) and is linked through Tilaajavastuu.fi to the employer’s Tilaajavastuulaki compliance status.

3. Työturvallisuuskortti (Occupational Safety Card). Administered by Työturvallisuuskeskus TTK (https://www.tyoturvallisuuskortti.fi), this is a sector-recognised safety induction certificate valid for five years and contractually required on virtually every site — the Finnish counterpart to SCC/VCA. Training is available in Finnish, Swedish, English, Russian, Estonian, Polish, and other languages; typical 2026 cost EUR 90-120 [verify 2026].

Statutory occupational-safety duties are concentrated in the Työturvallisuuslaki (738/2002) and Valtioneuvoston asetus rakennustyön turvallisuudesta (205/2009). The päätoteuttaja (main contractor) and rakennuttaja (principal) carry primary safety-coordination duties under Directive 92/57/EEC.

Further statutory trade-activity restriction:

a. Electrical work under Sähköturvallisuuslaki (1135/2016) requires the operator to act under an undertaking holding sähkötöiden johtaja registration with Tukes (https://tukes.fi). Authorisation classifications S1, S2, S3 are granted on formal qualifications and supervised experience. Foreign electricians may seek recognition under Laki ammattipätevyyden tunnustamisesta (1384/2015) transposing Directive 2005/36/EC.

b. Pressure equipment and code welding under Painelaitelaki (1144/2016) require qualification under EN ISO 9606-1 with procedure qualification under EN ISO 15614-1.

c. Tulityökortti (Hot Work Card) administered by SPEK (https://www.spek.fi) is contractually required for welding, cutting, and grinding outside designated hot-work areas, under property-insurance terms drafted by Finanssiala ry. Valid five years.

Primary sources:

• Tilaajavastuulaki 1233/2006: https://www.finlex.fi/fi/laki/ajantasa/2006/20061233
• Työturvallisuuslaki 738/2002: https://www.finlex.fi/fi/laki/ajantasa/2002/20020738
• Valtioneuvoston asetus rakennustyön turvallisuudesta 205/2009: https://www.finlex.fi/fi/laki/ajantasa/2009/20090205
• Sähköturvallisuuslaki 1135/2016: https://www.finlex.fi/fi/laki/ajantasa/2016/20161135
• Verohallinto construction-site Veronumero: https://www.vero.fi/en/individuals/tax-cards-and-tax-returns/arriving_in_finland/work_in_finland/working-on-a-construction-site/

Language & Communication Requirements

Minimum Functional Level

• A2 Finnish/English.
• Technical Literacy: Must read WPS and welding symbols (a5, z-measures).

Key Vocabulary

• Hitsaus (Welding)
• Sauma (Seam/Weld)
• Railo (Groove/Prep)
• Tunkeuma (Penetration)
• Virta (Current/Amps)
• Jännite (Voltage)
• Tulityökortti (Hot Work Card)

Finland does not impose a statutory CEFR threshold on labour migration to construction or EPC trades. Finland is constitutionally bilingual in Finnish and Swedish under Suomen perustuslaki (731/1999) §17. The principal working language on most construction sites is Finnish, but English is widely tolerated on EPC and industrial mega-projects, particularly: Olkiluoto OL3/OL4 (TVO) nuclear engagements, large-scale battery and data-centre construction (Vaasa, Kotka, Espoo), forest-product capacity projects (Kemi, Äänekoski), and offshore-wind developments along the Bothnian coast. Swedish-speaking sites are concentrated in the Vaasa-Kokkola-Pietarsaari region and on Åland.

Safety induction is increasingly available in English on major industrial projects. Työturvallisuuskortti is issued in Finnish, Swedish, English, Russian, Estonian, Polish, Lithuanian, and other languages under TTK supervision. Tulityökortti is similarly multi-language. 2026 training cost is typically EUR 90-120 for Työturvallisuuskortti and EUR 110-150 for Tulityökortti [verify 2026]. Sähkötyöturvallisuuskortti (SFS 6002) is required for electrical-adjacent work.

For long-term integration (Ulkomaalaislaki §56 permanent residence; Kansalaisuuslaki 359/2003 §13 naturalisation), Finnish or Swedish proficiency at YKI 3 (CEFR B1 equivalent) is required, evidenced through the YKI test administered by Opetushallitus. Kotoutumiskoulutus integration training is free of charge through TE-toimisto under the kotoutumislaki (Act 681/2023 in force from 1 January 2025).

Technical Competency Assessment Rubric

Evaluate the candidate on the following 10 dimensions.

Total Score Rule: Sum of (Score x Weight). Pass is 7/10.

Practical Test Specifications

Total Duration: 2 Hours

Test 1: The “Wrong EXC Level” Trap (Standard Compliance)

• Setup: Provide a drawing marked EXC3 (High quality, specific requirements). Provide a standard, generic WPS for EXC1 (Lower quality, wider tolerances).
• Task: “Set up the machine and weld this butt joint according to the documents.”
• Traps: The WPS does not match the Drawing Execution Class.
• Pass Criteria: Candidate STOPS and asks for the correct WPS or questions the discrepancy. You cannot weld EXC3 structures with an EXC1 procedure.
• Fail Behavior: Proceeds to weld without checking. IMMEDIATE FAIL.

Test 2: The “Dirty Joint” Trap (Quality) (15 Minutes)

• Setup: 15mm plates with heavy mill scale and rust.
• Task: “Weld a fillet weld here.”
• The Trap (Hidden): Supervisor says “Don’t worry about grinding, just burn through it.”
• Pass Criteria: Candidate GRINDS the clean metal strip first. Welding over mill scale/rust causes porosity and lack of fusion.
• Fail Behavior: Welds directly over the rust/scale.

Test 3: The Vertical Up (PF) Flux Core (Skill) (45 Minutes)

• Task: 12mm Plate, Fillet Weld, Vertical Up (PF).
• Criteria:
  • Throat Thickness: a-measure 5mm+.
  • Profile: Mitre or slightly convex (not sagging).
  • Undercut: None allowed (>0.5mm is fail).

Theoretical / Oral Knowledge Test

Format: 30 Questions (Verbal)

Section A: Standards & SFS-EN 1090

1. What is WPS? (Welding Procedure Specification).
2. What does EXC2 mean? (Execution Class 2 - Standard structural).
3. What is “CE Marking”? (Product compliance for EU market).
4. Difference: 135 vs 136? (135=Solid Wire / 136=Flux Cored).
5. Pre-heat purpose? (Prevent cracking / slow cooling).
6. Interpass temperature? (Max temp before next run).
7. What is a WPQR? (Qualification Record - proves the WPS).
8. Throat thickness symbol? (a).
9. Leg length symbol? (z).
10. NDT meaning? (Non-Destructive Testing).

Section B: Defects & Solutions 11. Cause of porosity? (No gas / Draft / Dirty plate). 12. Cause of Undercut? (Too hot / travel speed too fast / wrong angle). 13. Cause of Lack of Fusion? (Cold / wrong angle / didn’t hit root). 14. How to fix a crater crack? (Grind it out completely). 15. Spatter removal? (Chisel/Grinder - must be clean for painting). 16. Gas for MAG (Steel)? (Mix: Argon/CO2). 17. Gas for MIG (Aluminum)? (Argon). 18. Wire stick-out length (Flux)? (~15-20mm). 19. Polarity for Flux Core? (Usually DC+ but check wire spec). 20. Can you weld wet steel? (No. Hydrogen cracking).

Section C: Safety & Culture 21. Tulityökortti meaning? (Hot Work Card). 22. Fire watch duration? (Usually 1 hour after work). 23. UV radiation risk? (Arc eye). 24. Fume fever? (Zinc poisoning from galvanized steel). 25. Grinding sparks direction? (Away from others / flammable). 26. Emergency stop? (On the machine). 27. Alcohol policy? (Zero). 28. Lifting heavy beams? (Use crane/straps correctly). 29. Reporting accident? (Immediately). 30. PPE for overhead? (Leather sleeves / cap / tight collar).

Workplace Culture & Behavioral Expectations

”Laatu” (Quality)

• Traceability: Every beam confirms to the standard. Dealing with “CE” means valid certs.
• Autonomy: A Levyseppähitsaaja builds from the drawing. He doesn’t need a foreman holding the tape measure.

1. Veronumero is mandatory before any construction work begins on a Finnish site. The number is issued by Verohallinto upon application at a service point with passport and employment documentation; lead time is typically 1-3 working days. The Veronumerorekisteri is a public register at https://www.vero.fi and the principal contractor is liable to a control fee for any worker on site without a recorded number. Per-trade rubrics must verify Veronumero issuance and active register status before any deployment workflow.

2. Tilaajavastuulaki (1233/2006) imposes due-diligence liability on the principal and on every intermediate contractor for the tax, social-security, and CBA position of the immediate sub-contractor. Failed audits trigger principal fines (EUR 2,500-22,000, escalated to EUR 22,000-160,000 for systemic breaches under §9a). The Tilaajavastuu.fi service automates documentation but does not absolve underlying liability. Per-trade rubrics must verify rolling Tilaajavastuu compliance for the engaging employer of record.

3. Rakennusalan TES is universally binding through the yleissitova mechanism in Työsopimuslaki chapter 2 §7. All employers — domestic, EU posting, or third-country — must apply Palkkaryhmä I-VI tariffs plus matkakustannusten korvaus, päiväraha, helpotuspäivän palkka, lomakorvaus, and where applicable akkord settlement. Per-trade rubrics must reference the worker’s mapped Palkkaryhmä and the full allowance schedule, not the bare hourly rate.

4. Olkiluoto OL3/OL4 and other large industrial-EPC projects accept English-only crews and operate predominantly in English with multi-language safety induction; non-Olkiluoto, non-mega-project sites are typically Finnish-speaking with Swedish-speaking pockets in Ostrobothnia and on Åland. Per-trade rubrics must verify the deployment-site language profile separately from country-level tolerance assumptions.

5. Akkordi (urakkapalkka, piecework) is the dominant compensation mode on Finnish shell-and-core construction and routinely lifts effective hourly earnings 20-40% above Palkkaryhmä IV tuntipalkka base. The urakkalaskelma settlement is governed by Rakennusalan TES and is the principal driver of journeyman take-home variation between sites. Per-trade rubrics modelling worker take-home or deployment cost should treat akkord uplift as a site-level variable, not a national constant.

Red Flags & Instant Disqualifiers

• ❌ The Document Blind: Failing Trap 1 (Ignoring EXC level).
• ❌ The Rust Burner: Failing Trap 2 (Welding over scale).
• ❌ The Porosity King: Visible holes in weld.
• ❌ No Fire Safety: Grinding into a trash can / flammable area.

Country-Specific Adaptation Gaps

Common Challenges for Foreign Welders in Finland

1. SFS-EN 1090 Rigor

• Context: CE marking is legal law.
• Gap: “I weld good, I don’t need papers.”
• Correction: You must weld exactly to the WPS settings.

2. Multi-Skilling

• Context: Levyseppähitsaaja means PLATER + WELDER.
• Gap: “I only weld.”
• Correction: You must be able to fit, cut, and tack your own work.

Five recurring failure modes generate the majority of enforcement actions and chain-liability exposures:

1. AVI notification omission. Failure to lodge the AVI lähetetty työntekijä notification before work begins, or with incomplete identity or duration data, attracts a laiminlyöntimaksu under §35 (EUR 1,000-10,000 per breach, multiplied for systemic patterns) [verify 2026] and triggers an audit cascade across Verohallinto, ETK, and TVK. Each new posting address requires a fresh notification.

2. Rakennusalan TES wage non-parity. Because Rakennusalan TES is yleissitova, foreign and domestic employers are equally bound. The trap is acute on omitted CBA components: matkakustannusten korvaus, päiväraha, helpotuspäivän palkka, lomakorvaus, and akkord settlement under the urakkalaskelma framework. An hourly rate at or above Palkkaryhmä IV but missing these components is a Rakennusliitto-actionable underpayment and exposes the principal to joint-liability claims under Posted Workers Act §13.

3. Veronumero missing or expired. Engaging a worker without a valid Veronumero recorded in the Veronumerorekisteri is a breach of the Verotusmenettelylaki construction regime and exposes the principal to a control fee. Lead time at a Verohallinto service point is typically 1-3 working days but can extend on document-verification queries.

4. Tilaajavastuulaki due-diligence failure on subcontractors. Under §5, the principal must obtain — before contract signature — verovelkatodistus (max 3 months old), TyEL certificate, vastuuvakuutus position, tapaturmavakuutus cover, työterveyshuoltosopimus, and CBA position. Failure attracts a laiminlyöntimaksu of EUR 2,500-22,000 (escalated to EUR 22,000-160,000 under §9a for systemic breaches) [verify 2026]. Tilaajavastuu.fi automates documentation but does not absolve underlying liability.

5. Valttikortti not active. Site access without a valid Valttikortti, or under an expired card, is a contractual breach with virtually all main contractors. The card is linked through Tilaajavastuu.fi to the employer’s compliance status; if the employer falls out of compliance, the card is automatically suspended and the worker is locked out at the next turnstile read. The trap is acute for posted-worker employers who do not maintain rolling Tilaajavastuu compliance through the 6-monthly renewal cycle.

Scoring Interpretation & Hiring Guidance

• 0-5 (Liability): Will fail NDT. Do not hire.
• 6-7 (Hitsaaja): Good welder, needs supervision on plating.
• 8-10 (Levyseppähitsaaja): Complete professional.

Additional Notes

• Tools: Speedglas Helmet, Fillet Gauge, Mag-Drill.
• Cert: Tulityökortti (Hot Work) is mandatory.

Appendix: Research Log

1. Source Queries

• Query 1: “Finland MIG MAG welder duties levyseppähitsaaja SFS-EN 1090”
• Query 2: “Finland welding coordination IWS qualification requirements”

2. Key Findings & Validation

• Role: “Levyseppähitsaaja” combines plating and welding [1, 6].
• Impact on File: Rubric includes “Assembly/Plating”.
• Standard: SFS-EN 1090 and EXC classes are central to structural steel [13, 14].
• Impact on File: Trap 1 (Wrong EXC Level) tests this specific knowledge.
• Qualification: Welding Coordination (IWS) oversees the process [15].
• Impact on File: Senior Reality checks.

3. References (Traceability)

• [1] Hansavest: Job Description - [https://hansavest.com/] (Role).
• [13] SFS: SFS-EN 1090 Standard - [https://sfs.fi/] (Technical basis).
• [15] Metsta: Welding Coordination - [https://metsta.fi/] (Quality control).

References & Resources