Construction Industry Glossary

Achievement Measurement 2. The practical competence assessment that electrician apprentices must pass to qualify for a JIB Gold Card (ECS Gold Card). Sat at an approved assessment centre — involves installation, inspection, testing, and fault diagnosis within a set timeframe.

Construction (Design and Management) Regulations 2015. UK legislation that places health and safety duties on all parties involved in a construction project — clients, designers, principal designers, principal contractors, and contractors. CDM requires a Construction Phase Plan and (on larger projects) a Health and Safety File.

Construction Industry Scheme. HMRC's system for managing tax on payments to self-employed construction workers. Under CIS, contractors and agencies deduct tax at source from payments to subcontractors — 20% if the subcontractor is registered with HMRC, 30% if unregistered. Workers file a self-assessment tax return annually and can claim CIS deductions as tax paid on account.

Chartered Institute of Building. The professional body for construction management in the UK. CIOB accredits construction management degrees, offers Chartered Membership (MCIOB) and Fellowship (FCIOB) designations for experienced construction professionals, and sets standards for building management practice.

Construction Industry Training Board. The industry training body for UK construction. CITB collects a levy from construction employers and uses it to fund training grants, apprenticeships, and the CSCS scheme. CITB administers the Health, Safety & Environment (HSE) test required for CSCS and most plant cards.

Construction Plant Competence Scheme. The most widely recognised plant operator card scheme in UK construction, administered by NOCN. CPCS cards confirm competence to operate specific plant categories. Red Card (Trained Operator, 2 years) progresses to Blue Card (Competent Operator, 5 years) on completion of NVQ Level 2 in Plant Operations.

Construction Skills Certification Scheme. The primary card scheme confirming health and safety competence for construction site workers. Different card colours indicate different qualification levels — Green (Labourer), Blue (Skilled Worker), Gold (Supervisor), Black (Manager), White (Professionally Qualified). All cards require the CITB HSE test at minimum.

The CSCS card for Site Managers, Project Managers, and Professionally Qualified persons. Requires an NVQ/SVQ Level 6 or 7 in Construction Site Management or equivalent, plus the CITB HSE test. Valid 5 years.

The CSCS Skilled Worker card. Confirms the holder has an NVQ Level 2 or equivalent trade qualification in their discipline. Required for all recognised skilled tradespeople (bricklayers, electricians, carpenters, groundworkers, etc.) on principal contractor sites.

The CSCS Supervisor card. Requires an NVQ/SVQ Level 3 or 4 in a construction supervision discipline. Appropriate for site supervisors, charge-hands, and those working towards site management who do not yet hold a Black Card.

The CSCS Labourer card. Entry-level card for general site labourers — confirms completion of the CITB HSE test but does not confirm any trade qualification. Required for all site labourers on CSCS-registered sites.

A fixed daily payment for a worker, regardless of hours worked within the day — commonly used in construction for CIS subcontractors and agency workers. Day rates are quoted gross (before CIS deduction). UK construction day rates in 2026 typically range from £130–£180/day (labourers) to £300–£500+/day (site managers).

Designated Background Employer. In some construction contracts, refers to a contractor designated by the client to provide specific specialist services. More commonly in UK construction: DBE is also used informally to refer to design-build-engineer procurement routes.

Electrotechnical Certification Scheme. The card scheme for electrical workers in UK construction, managed by the JIB. ECS cards confirm electrical qualification and competence at different levels — ECS Gold Card (qualified JIB electrician) is the standard for qualified electricians on UK construction sites. ECS is the electrical sector equivalent of CSCS.

Experienced Worker Practical Assessment. A route to NVQ qualification for experienced construction workers who have not completed formal training. Candidates demonstrate competence through a practical assessment and evidence of prior experience, bypassing the need for a full apprenticeship or college course. Available for most trade NVQs.

Glass Reinforced Plastic. A composite material widely used in construction for roofing, cladding, and bespoke architectural features. Also referred to as fibreglass.

Health and Safety Executive. The UK government agency responsible for regulating health and safety at work, including construction sites. The HSE investigates incidents, issues enforcement notices, prosecutes breaches of health and safety law, and publishes guidance for the construction industry. Also refers to the CITB Health, Safety & Environment test — required for CSCS and most plant cards.

Off-payroll working rules (commonly called IR35). HMRC legislation that determines whether a self-employed contractor working through a personal service company should be treated as employed for tax purposes. IR35 applies in some construction contexts — particularly to certain management and professional roles. Most site-based construction workers paid through CIS are not affected.

Joint Industry Board for the Electrical Contracting Industry. The body that manages pay, qualifications, and working conditions for electricians in UK construction. JIB administers the ECS card scheme. JIB Gold Card is the recognised qualification for fully trained electricians who have passed the AM2 assessment.

Joint Industry Board for Plumbing and Mechanical Engineering Services. The JIB-PMES card scheme covers plumbers and mechanical engineers in UK construction, similar to how JIB/ECS covers electricians. JIB-PMES cards confirm qualification for plumbing, pipefitting, and heating trades.

Mechanical and Electrical. The discipline encompassing all mechanical services (heating, ventilation, air conditioning — HVAC; pipework; drainage) and electrical services (power, lighting, data, fire alarms) within a building. M&E is one of the highest-shortage disciplines in UK construction.

National Vocational Qualification. A competence-based qualification demonstrating ability to perform specific work activities to a defined standard. In construction, NVQ Level 2 is the standard for skilled tradespeople (CSCS Blue Card), Level 3 for supervisors (CSCS Gold), and Level 6/7 for site managers (CSCS Black). NVQs are portfolio-based and assessed in the workplace.

National Plant Operators Registration Scheme. A CSCS-affiliated plant card scheme accepted on the majority of UK construction sites. NPORS is generally lower-cost than CPCS and follows a similar trained/competent operator pathway. NCC Assessed NPORS cards carry the CSCS logo. Some major contractors and frameworks specify CPCS only.

Pay As You Earn. The HMRC system under which employers deduct income tax and National Insurance from employees' wages before paying them. Construction agency workers on PAYE are employed by the agency, receive employment rights (holiday pay, sick pay), and do not need to file a self-assessment tax return. Typically lower take-home than CIS on equivalent gross rates.

Personal Protective Equipment. Protective clothing and equipment required on construction sites — including hard hats, hi-vis vests, safety boots, gloves, eye protection, and ear protection. Under CDM and the PPE at Work Regulations, employers must provide appropriate PPE. CIS subcontractors can claim PPE costs as an allowable business expense.

Under CDM Regulations 2015, the principal contractor is the organisation appointed by the client to plan, manage, monitor, and coordinate health and safety during the construction phase of a project. On most significant construction projects, the main contractor takes on the principal contractor role.

The legal requirement for UK employers and labour providers to verify that every worker has the right to work in the United Kingdom before employment commences. Acceptable documents include UK/Irish passport, Biometric Residence Permit (BRP), share code, or other HMRC-specified documents. Failure to conduct right-to-work checks exposes employers to civil penalties of up to £45,000 per worker.

Site Management Safety Training Scheme. A 5-day CITB-approved course that is the de facto industry standard for anyone managing a construction site. Covers health and safety law, CDM, risk assessment, management responsibilities, and site emergency procedures. Valid 5 years — must be renewed. SSSTS is the 2-day supervisor-level equivalent.

Site Supervisor Safety Training Scheme. A 2-day CITB-approved course for site supervisors. Covers health and safety responsibilities for those supervising construction work. Considered a stepping stone to SMSTS for workers progressing to site management. Valid 5 years.

In construction, a subcontractor is a company or individual engaged by a main contractor to carry out specific elements of work (e.g. groundworks, electrical, roofing). Under CIS, subcontractors receiving payments from contractors have tax deducted at source. Self-employed site operatives paid through agencies are typically CIS subcontractors of the agency.

A third-party company that acts as an employer for contractors and agency workers, employing them under PAYE and handling payroll, tax, and NI deductions. Umbrella companies charge a weekly margin (typically £15–£30) for this service. Workers receive PAYE employment status and employment rights but lower take-home than CIS. HMRC has pursued some umbrella arrangements (loan schemes) as avoidance.

Unique Taxpayer Reference. A 10-digit number issued by HMRC to identify individuals and organisations for Self Assessment tax purposes. CIS construction subcontractors need a UTR to register with HMRC and receive the standard 20% CIS deduction rate (vs 30% without registration). Obtained by registering for Self Assessment at gov.uk.