Your First Day on a UK Building Site Through an Agency: What to Bring and What Happens

The short answer: bring your CSCS card (the plastic card or the digital card in the My CSCS app), photo ID, your boots and hi-vis if you have them, and your bank and National Insurance details. Arrive early, sign in at the site office or gate, and expect a site induction before you start work — under the Construction (Design and Management) Regulations 2015, the principal contractor must make sure a suitable site induction is provided.

Most first-day guides online are written for American sites. This one is for UK sites, where the rules come from the CDM Regulations 2015, cards come from CSCS and its alliance schemes, and the site you are sent to will usually be run by a principal contractor with its own procedures.

What to Bring on Your First Day

Your CSCS card — physical or digital

Holding a CSCS card is not a legal requirement, but CSCS says most principal contractors and major housebuilders require one. You no longer have to carry the plastic card: CSCS says the digital card in the My CSCS app appears as soon as an application is approved and can be used to access site. It shows the same details as the physical card, and the site can check it with CSCS Smart Check using a dynamic QR code. If you rely on the app, charge your phone.

Not sure which card you need? Our CSCS card guide explains the card types, and our CSCS labourer jobs page covers what the Labourer card requires.

Photo ID and right-to-work evidence

Bring photo ID such as a passport or driving licence. Workers provide right-to-work evidence during registration. Trade Force reviews the information supplied and discusses documentation requirements before putting workers forward. GOV.UK explains how people prove their right to work: British and Irish citizens can use a passport or passport card (current or expired), and people who are not British or Irish citizens can use a share code or their eligible immigration documents. Our guide to right to work in construction covers who is responsible for what.

Bank and National Insurance details

Have your bank details and National Insurance number to hand. If you are still waiting for a National Insurance number, GOV.UK says you can start work before you receive it if you can prove you have the right to work in the UK.

Boots, hi-vis and weather gear

Bring your own boots and hi-vis if you have them. If you don’t, tell us before your start. Any PPE the job requires is provided free. Since 6 April 2022 the PPE at Work Regulations have covered “limb (b)” workers as well as employees: HSE says that where a risk assessment shows a worker needs PPE, the employer must provide it free of charge. Also bring clothes for the weather, and food and a drink for your break.

Getting There and Signing In

Plan your route the day before and aim to arrive early. Big sites often have several gates and limited parking, and your first morning takes longer because of the induction. Make sure you have the full address, postcode, gate and the name of the person you are reporting to.

You will not be able to walk straight on. Under the CDM Regulations the principal contractor must take the necessary steps to prevent access by unauthorised persons, so expect to report to the gate or site office, show your card, and sign in. Signing in and out every day matters: it is how the site knows who is on it if there is an emergency.

The Site Induction: What Happens and Why

Your first hour is usually the induction. Regulation 13 of the CDM Regulations 2015 says the principal contractor must ensure that a suitable site induction is provided, and HSE’s guidance says the principal contractor must make sure all workers have site-specific inductions and any further information and training they need. Where the principal contractor has not already provided one, the contractor you work for must provide it.

Inductions vary from site to site, but the law and HSE guidance point to what you should come away knowing:

• The site rules — PPE zones, walkways, smoking areas, phone use and any areas that are off limits;
• The main hazards on this site and how they are controlled, such as plant movements, work at height and excavations;
• What to do in an emergency — alarms, escape routes, assembly points and first aid;
• Where the welfare facilities are. Schedule 2 of the CDM Regulations requires toilets, washing facilities with hot and cold or warm water, drinking water, somewhere to change and store clothing where needed, and rest facilities.

You may be asked to sign to confirm you attended and understood. If anything was hard to follow, say so before you sign.

Site Rules and the Working Day

After the induction a supervisor or chargehand will tell you where to work. A few habits make a strong first impression:

• Wear your PPE everywhere the rules say, not just when someone is watching;
• Only do work you are trained and authorised for. The CDM Regulations say a contractor must not employ or appoint someone unless they have, or are in the process of getting, the skills, knowledge, training and experience for the task. If you are asked to drive plant or direct vehicles and you don’t hold the ticket, say so — HSE says people who direct vehicle movements must be trained and authorised to do so;
• Keep your area tidy, stay out of plant exclusion zones and be back on time from breaks.

Timesheets: Recording Your Hours

Agency work runs on timesheets, whether on paper, in an app or signed off by the site supervisor. Record your start, finish and break times accurately on the day, get them approved the way the agency asks, and keep your own note. If something doesn’t match, raise it straight away.

If You Are Running Late or Can’t Make It

Trains get cancelled and people get ill. What matters is telling people early: phone the agency as soon as you know, before your start time if you can, and the site contact too if you have one. A worker who rings at 6am to say they will be an hour late keeps the site’s trust; a no-show usually doesn’t get a second booking. If you are hurt at work, however minor, report it to your supervisor and tell the agency.

Asking Questions Is Part of the Job

No one expects you to know a new site on day one. HSE lists consulting and engaging with workers about their health, safety and welfare among the principal contractor’s duties, and good supervisors would rather answer a question than fix a mistake. If something looks unsafe, stop and ask before carrying on.

Working Through Trade Force UK

Trade Force UK supports contractor enquiries and worker registrations across the UK, with an initial focus on Greater Manchester, the North West and surrounding areas as the worker network grows. Registration is free, but it does not guarantee work: there is no public job board, and we contact registered workers when suitable work comes up. If anything about a booking is unclear — the site details, start time, contact or PPE — ask us before your first day. To get started, register for work, or read our guide on how to get construction work in the UK.

This guide is general information, not legal advice.

Frequently Asked Questions

Can I use the digital CSCS card on my phone instead of the plastic card?

Yes. CSCS says the digital card in the My CSCS app appears as soon as an application is approved and can be used to access site. It shows the same details as the physical card and can be checked with CSCS Smart Check using a dynamic QR code, so keep your phone charged.

Do I need to bring my own PPE on my first day?

Bring your own boots and hi-vis if you have them. If you don’t, tell us before your start. Any PPE the job requires is provided free.

What happens at a construction site induction?

The induction is a briefing on that specific site before you start work: its rules, main hazards, emergency procedures and welfare facilities. Under the CDM Regulations 2015 the principal contractor must make sure a suitable site induction is provided.

Can I start work before I have a National Insurance number?

GOV.UK says you can start work before you receive your National Insurance number if you can prove you have the right to work in the UK. Give the number to the agency as soon as you have it.

What should I do if I am going to be late on my first day?

Phone the agency as soon as you know, before your start time if possible, and the site contact if you have been given one. Telling people early protects your booking; not turning up without a call usually ends it.

Does registering with an agency guarantee me site work?

No. Registering with Trade Force UK is free, but it does not guarantee work. There is no public job board; we contact registered workers when suitable work comes up for their trade, location and availability.

Related reading: How to Get Construction Work in the UK · CSCS Card Guide UK · Right to Work in UK Construction