The standards behind every score
WorkerProof does not guess. Every trade module scores candidates against the official standards below — published here in full, for transparency.
Matrix verified against EUR-Lex / ISO sources · last verified 2026-07-26
● Live module
Welder qualification
- EN ISO 9606-1 (steel)
- EN ISO 9606-2 (aluminium)
- EN ISO 9606-3/4/5
- ISO 14732 (operators)
- ASME IX (QW-484 WPQ)
- AWS D1.1 / D1.2 / D1.6
Weld quality levels
- EN ISO 5817 (B/C/D)
- EN ISO 10042 (Al)
- ISO 13919 (EB/laser)
- ISO 6520-1 (imperfections)
Fabrication & procedure
- EN 1090-2 (EXC1–4)
- EN 1090-3 (Al)
- EN ISO 3834-2/3/4
- PED 2014/68/EU · EN 13445 · ASME VIII
- EN ISO 15614-1 (WPQR)
- EN ISO 15609 (WPS)
NDT evidence
- EN ISO 17637 (VT)
- ISO 3452 (PT)
- ISO 17638 (MT)
- ISO 17636-1/2 (RT) · ISO 10675
- ISO 17640 (UT) · ISO 11666
- ISO 13588 / 10863 (PAUT/TOFD)
Positions, materials, drawings
- EN ISO 6947 (6G, H-L045, PF, PE…)
- ISO/TR 15608 (material groups)
- EN ISO 2553 (weld symbols)
Official ESCO skills for this occupation · welder
View on ESCO portal ↗select filler metalmetal thermal conductivityensure equipment availabilityremove processed workpiecetorch temperature for metal processesinterpret 2D plans
● Live module
Fabrication & assembly
- EN 1090-2 (execution, fit-up)
- EN ISO 13920 (welded-structure tolerances)
- ISO 2768 (+ ISO 22081 GPS)
Cutting & preparation
- EN ISO 9013 (thermal cut quality)
- EN ISO 9692 (joint preparation)
- EN ISO 2553 (drawings)
Vocational
- NPK Ključavničar (SI)
- Metallbauer – Konstruktionstechnik (DE)
- Fitter / fabricator (EN)
Official ESCO skills for this occupation · structural ironworker
View on ESCO portal ↗use safety equipment in constructionremove rust from motor vehiclesoperate handheld riveting equipmentoperate rust proofing spray guninterpret 3D planstend metal sawing machine
● Live module
LV installations
- HD 60364 / IEC 60364 series
- EN 50110-1 (operation of installations)
- HD 60364-6 (verification)
Equipment checks & vocational
- EN 50678 / EN 50699
- NPK Elektroinštalater (SI)
- Elektrofachkraft / VDE practice (DE)
Official ESCO skills for this occupation · industrial electrician
View on ESCO portal ↗work ergonomicallyuse safety equipment in constructionuse precision toolsinstall electric switchesinstall electricity socketsresolve equipment malfunctions
CNC operator
ESCO / ISCO-08 · 7223 (Metal working machine tool setters & operators)
How to verify a CV →Tolerances & GPS
- ISO 2768 (+ ISO 22081)
- ISO 286 (fits, H7/g6…)
- ISO 1101 (GD&T)
- ISO 21920 (surface texture)
Programming
- ISO 6983 (G-code)
- Controls: Fanuc / Siemens / Heidenhain
Official ESCO skills for this occupation · computer numerical control machine operator
View on ESCO portal ↗remove inadequate workpiecessupply machinesupply machine with appropriate toolsread standard blueprintsuse automatic programmingmonitor automated machines
● Live module
Qualification (verified 07/2026)
- Directive (EU) 2022/2561 — Code 95 (CPC)
- Directive 2006/126/EC (licence categories)
- ADR 2025 (dangerous goods)
- Reg. (EU) 165/2014 (tachograph)
- Reg. (EC) 561/2006 (driving time)
Official ESCO skills for this occupation · cargo vehicle driver
View on ESCO portal ↗interpret traffic signalssupervise unloading of cargouse communication devicesroad transport legislationeffective perception of transport environmentstay alert
Construction
ESCO / ISCO-08 · 7112 / 7114 / 7115 (Bricklayers, concreters, carpenters)
How to verify a CV →Execution standards
- EN 13670 (concrete execution)
- EN 1090 (steel)
- EN 12811 / 12812 (scaffolds, falsework)
- ISO 17660 (rebar welding)
- NPK vocational (SI)
Official ESCO skills for this occupation · bricklayer
View on ESCO portal ↗check straightness of brickmix construction groutswork ergonomicallysort wastefollow safety procedures when working at heightsfollow health and safety procedures in construction
Plumber / HVAC
ESCO / ISCO-08 · 7127 (A/C & refrigeration mechanics) · 7126 (Plumbers)
How to verify a CV →Refrigerants (verified 07/2026)
- Regulation (EU) 2024/573 (F-gas — replaces 517/2014)
- Category I–IV personnel certification
- EN 378 (refrigeration systems)
Water, heating, brazing
- EN 806 (drinking water)
- EN 12828 (heating)
- EN ISO 13585 (brazing qualification)
Official ESCO skills for this occupation · heating, ventilation, air conditioning and refrigeration engineering technician
View on ESCO portal ↗conduct routine machinery checksheating, ventilation, air conditioning and refrigeration partsensure compliance with environmental legislationrefrigerantsinterpret 3D planshandle refrigerant transfer pumps
● Live module
No ISO-style skill classification exists — scoring relies on verified references, scope and years.
Hygiene & vocational
- HACCP — Regulation (EC) 852/2004
- NPK Kuhar / Natakar (SI)
Official ESCO skills for this occupation · cook
View on ESCO portal ↗order suppliesmaintain kitchen equipment at correct temperatureuse food cutting toolsuse culinary finishing techniquesreceive kitchen supplieswork in a hospitality team
Care worker / Nurse
ESCO / ISCO-08 · 5321 (Health care assistants) · 3221 (Nursing associates)
How to verify a CV →Regulated profession: WorkerProof verifies documents (diploma, licence, registration) — it never promises recognition.
Recognition & registration
- Directive 2005/36/EC (+ 2013/55/EU)
- National register (e.g. chamber of nursing)
- Language requirement (typically B2)
- NPK Socialna oskrba (SI, care workers)
Official ESCO skills for this occupation · healthcare assistant
View on ESCO portal ↗convey medical routine informationapply health scienceswork with nursing staffdeal with emergency care situationsprovide basic support to patientsmonitor basic patients signs
● Live module
Mandatory certificates (verified 07/2026)
- Reg. (EC) 307/2008 — MAC refrigerant training (Dir. 2006/40/EC)
- DGUV Info 209-093 — HV vehicle qualification (levels S–3S)
- Reg. (EU) 165/2014 — tachograph workshops
Vocational
- Kfz-Mechatroniker (DE) / NPK avtoserviser (SI)
- Manufacturer trainings (OEM)
- Diagnostics (OBD, factory testers)
Official ESCO skills for this occupation · vehicle technician
View on ESCO portal ↗apply health and safety standardstypes of vehiclesfollow control of substances hazardous to health proceduresmechanical components of vehiclescarry out repairs and maintenance of vehicle bodiesprovide customer information related to repairs
Warehouse / Forklift
ESCO / ISCO-08 · 8344 (Lifting truck operators) · 4321 (Stock clerks)
How to verify a CV →Equipment & safety
- National forklift licence (Staplerschein / NPK)
- ISO 3691-1 (industrial trucks)
- Directive 2009/104/EC (work equipment)
- ADR ch. 1.3 awareness
Skills evidence
- WMS (SAP WM/EWM…)
- High-rack / reach truck
- Picking accuracy records
Official ESCO skills for this occupation · forklift operator
View on ESCO portal ↗follow stock control instructionsensure compliance with environmental legislationapply company policiesmaintain concentration for long periodsfollow control of substances hazardous to health proceduresconduct forklift inspections
Crane & plant operator
ESCO / ISCO-08 · 8343 (Crane & hoist operators) · 8342 (Earthmoving operators)
How to verify a CV →Licences & standards
- National crane operator licence / NPK (by crane type)
- EN 13000 (mobile cranes)
- ISO 9926-1 (operator training)
- Directive 2009/104/EC
Plant machinery
- National TGM operator certificates (excavator, loader…)
- Rigger / signaller certificates
- Medical fitness certificate
Official ESCO skills for this occupation · tower crane operator
View on ESCO portal ↗follow safety procedures when working at heightsfollow health and safety procedures in constructioninterpret 3D plansinterpret 2D plansmechanical toolsinspect construction sites
Pipefitter / Industrial fitter
ESCO / ISCO-08 · 7126 (Plumbers & pipe fitters — industrial)
How to verify a CV →Execution standards
- EN 13480 (metallic industrial piping; -5 testing)
- PED 2014/68/EU (pressure equipment)
- EN 1090 (steel assembly)
- EN ISO 9606 (if welding)
Site evidence
- Isometrics & P&ID reading
- Pressure test records
- Heights / confined space / BOSIET certificates
Official ESCO skills for this occupation · pipe welder
View on ESCO portal ↗use metal bending techniquesdetect flaws in pipeline infrastructureassemble manufactured pipeline partsensure regulatory compliance in pipeline infrastructurestechnical drawingswork with blacksmithing hand tools
● Live module
Standards & safety
- EN 12811 (working scaffolds)
- EN 12810 (façade scaffolds)
- TRBS 2121-1 (DE practice)
- Directive 2009/104/EC (work at height)
Vocational
- Work-at-height certificate
- Gerüstbauer (DE) / national training
- System scaffolds (Layher, PERI UP…)
Official ESCO skills for this occupation · construction scaffolder
View on ESCO portal ↗use safety equipment in constructionwork ergonomicallyscaffolding componentsfollow health and safety procedures in constructionbuild scaffoldingdismantle scaffolding
Software developer / IT
ESCO / ISCO-08 · 2512 (Software developers) · 3512 (ICT support)
How to verify a CV →Frameworks & certification
- EN 16234-1 — European e-Competence Framework (e-CF)
- Vendor certifications (AWS / Azure / GCP / CKA / Cisco)
- ISTQB (software testing)
Skills evidence
- Production system references (scale, stack)
- Public code (GitHub / portfolio)
- EQF degrees / bootcamp + practice
Official ESCO skills for this occupation · software developer
View on ESCO portal ↗use technical drawing softwaredebug softwaretechnical drawingsprovide technical documentationutilise computer-aided software engineering toolsdefine technical requirements
● Live module
Standards & safety
- Directive 2009/104/EC — work at height (mandatory certificate)
- EN 516 / EN 517 (roof safety elements)
- EN 612 (gutters & downpipes)
Vocational
- NPK krovec / klepar (SI)
- Dachdecker / Klempner Geselle-Meister (DE)
- Roof-type references (flat, metal, tile)
Official ESCO skills for this occupation · roofer
View on ESCO portal ↗recognise signs of wood rotwork ergonomicallyfollow safety procedures when working at heightsinterpret 2D plansperform roof maintenanceroofing techniques
● Live module
Quality & hygiene
- EN 13549 (cleaning services — quality measurement)
- Reg. (EC) 852/2004 (food-area hygiene)
- Directive 2009/104/EC (machines, height)
Vocational
- NPK čistilec (SI), hygiene minimum
- Disinfection trainings (healthcare)
- Verified client references (m², duration)
Official ESCO skills for this occupation · building cleaner
View on ESCO portal ↗maintain facility security systemsreport major building repairsmaintain cleaning equipmentinform on toilet facilities malfunctionssort wasteclean surfaces
● Live module
Food law (verified 07/2026)
- Reg. (EC) 852/2004 — hygiene & HACCP
- Reg. (EC) 853/2004 — food of animal origin
- Reg. (EU) 1169/2011 — allergens
Vocational
- Fleischer / Bäcker (DE), NPK mesar / pek (SI)
- Hygiene minimum certificate
- Line / cutting norms evidence
Official ESCO skills for this occupation · butcher
View on ESCO portal ↗mark differences in coloursgrind meatmaintain food specificationswarm blooded animal organsapply GMPmonitor stock level
Scores are an independent AI assessment of submitted CVs against the criteria above — always verify original certificates before hiring. Standards referenced remain the property of their issuing bodies (ISO, CEN, ASME, AWS, EU).
Standards encyclopedia
Plain-language guide to every standard we score against.
EN ISO 9606
EN ISO 9606 — welder qualification test
Welding
EN ISO 5817
EN ISO 5817 — weld quality levels B, C, D
Welding
EN 1090
EN 1090 — execution of steel structures (EXC1–4)
Welding
VT · PT · MT · RT · UT
NDT — non-destructive testing of welds
Welding
ISO 2768 · 286 · 1101 · 21920
Tolerances & GPS — ISO 2768, 286, 1101, 21920
Machining & tolerances
HD 60364 / IEC 60364
HD 60364 — low-voltage electrical installations
Electrical
EN 50110-1
EN 50110-1 — safe operation of electrical installations
Electrical
Code 95 · (EU) 2022/2561
Code 95 — professional driver qualification (Dir. (EU) 2022/2561)
Transport & driving
ADR 2025
ADR — dangerous goods by road
Transport & driving
(EU) 165/2014 · (ES) 561/2006
Tachograph & driving times — (EU) 165/2014 and (EC) 561/2006
Transport & driving
EN 13670 · ISO 17660
EN 13670 — execution of concrete structures (+ ISO 17660 rebar welding)
Construction
EN 12810 · EN 12811 · TRBS 2121
Scaffolding — EN 12810, EN 12811 and TRBS 2121
Construction
(EU) 2024/573
F-gas Regulation (EU) 2024/573 — refrigerant certification I–IV
HVAC & refrigerants
EN 378
EN 378 — refrigerating systems and heat pumps, safety
HVAC & refrigerants
(ES) 852/2004
HACCP — food hygiene Regulation (EC) 852/2004
Food & hygiene
(ES) 853/2004
Regulation (EC) 853/2004 — food of animal origin
Food & hygiene
(EU) 1169/2011
Regulation (EU) 1169/2011 — allergen information
Food & hygiene
2005/36/ES · RegProf
Directive 2005/36/EC & RegProf — regulated professions
Classifications & recognition
(ES) 307/2008
Regulation (EC) 307/2008 — vehicle A/C (MAC) training
Vehicle service
DGUV 209-093
DGUV 209-093 — high-voltage qualification for EV work
Vehicle service
ISO 3691-1 · 2009/104/ES
Forklift licence — national certificates, ISO 3691-1, Dir. 2009/104/EC
Logistics & machinery
EN 13000 · ISO 9926-1
Cranes — EN 13000, ISO 9926-1 and national operator licences
Logistics & machinery
EN 13480 · PED 2014/68/EU
EN 13480 & PED — industrial piping and pressure equipment
Industrial assembly
ESCO · ISCO-08
ESCO & ISCO-08 — the EU classification of occupations and skills
Classifications & recognition
EN ISO 3834
EN ISO 3834 — welding quality management
Welding
EN ISO 15609 · 15614
WPS & WPQR — welding procedure specification and qualification
Welding
ISO 14732
ISO 14732 — welding operators (mechanised & automatic)
Welding
EN ISO 6947
EN ISO 6947 — welding positions (PA–PG, 1G–6G)
Welding
ISO/TR 15608
ISO/TR 15608 — material groups for welding
Welding
EN ISO 2553
EN ISO 2553 — weld symbols on drawings
Welding
ISO 6983 (G-koda)
ISO 6983 — G-code, the CNC programming language
Machining & tolerances
EN ISO 9013 · 9692
EN ISO 9013 & 9692 — thermal cutting and joint preparation
Welding
EN 806 · EN 12828
EN 806 & EN 12828 — drinking water and heating installations
HVAC & refrigerants
EN ISO 13585
EN ISO 13585 — brazer qualification
HVAC & refrigerants
EQF · NPK · Geselle/Meister
EQF, NPK, Geselle/Meister — vocational qualification systems
Classifications & recognition
2009/104/ES
Directive 2009/104/EC — work equipment and work at height
Construction
ASME IX · AWS D1.1
ASME IX & AWS D1.1 — American welding codes
Welding
ISO 9712
ISO 9712 — NDT personnel certification (levels 1–3)
Welding
EN 13445 · ASME VIII
EN 13445 & ASME VIII — unfired pressure vessels
Industrial assembly
EN ISO 9606-2 · 10042 · 13919
Aluminium & special processes — 9606-2, ISO 10042, ISO 13919
Welding
EN 50678 · EN 50699
EN 50678 / 50699 (VDE 0701/0702) — testing of electrical appliances
Electrical
EN 62305
EN 62305 — lightning protection systems
Electrical
EN 12195-1
EN 12195-1 — cargo securing on road vehicles
Transport & driving
2006/126/ES
Directive 2006/126/EC — EU driving licence categories
Transport & driving
ATP (UNECE)
ATP — international transport of perishable foodstuffs
Transport & driving
Vezač bremen · Signalist
Rigger & signaller — slinging loads and crane signalling
Logistics & machinery
EN 12812
EN 12812 — falsework (temporary support structures)
Construction
89/391/EGS · TPO
First aid & BLS — workplace safety trainings (Dir. 89/391/EEC)
Classifications & recognition
EN 16234-1 (e-CF)
EN 16234-1 — the European e-Competence Framework (e-CF)
Classifications & recognition
AWS · Azure · CKA · ISTQB
IT vendor certifications — AWS, Azure, GCP, Kubernetes, ISTQB
Classifications & recognition
EN 516 · EN 517 · EN 612
Roofing standards — EN 516, EN 517, EN 612
Construction
EN 13549
EN 13549 — quality measurement for cleaning services
Classifications & recognition
Official sources & verification
Every module is built and re-verified against these official databases:
EUR-Lex ↗
EU law — regulations & directives (852/2004, 2022/2561, 2024/573…)
ESCO ↗
EU classification of occupations & skills, 28 languages
RegProf ↗
EU database of regulated professions & competent authorities (Dir. 2005/36/EC)
ELA / EURES ↗
Official EU labour shortages report — our trades cover the top shortage occupations
ISO OBP ↗
ISO Online Browsing Platform — current status of ISO/EN standards
Each trade is mapped to the EU ESCO / ISCO-08 occupation classification (shown on the card).