Safe2Site Online CSCS

Safe2Site Supervision Training (S2SST)

Safe2Site Supervision Training (S2SST) is the only CITB approved online alternative to SSSTS.

  • The course requires approximately 8-10 hours to complete.
  • No need to take time off work or use annual leave.
  • Certification is valid for 5 years.
  • You will be registered on the CITB as a qualified Site Supervisor.

No booking required or classrooms to attend – start now


Click here to read our customers reviews or to read our FAQs

Book now!

Get our S2SST course at a reduced price.



(Standard price £225 – £30 off)

Get yourself skilled up

With an earning potential of £10-£12k.

Course Book

CITB Site Safety Plus, Construction Site Supervision Book GE706


for the eBook version

(A hard copy is £28.75)

Bought directly from CITB

S2SST course overview

If you have already bought our Safe2Site Level 1 course, you will know that COSAC always delivers on cost, speed and customer services. You can expect exactly the same standard of product with S2SST. 25,000 customers can’t be wrong! Check out our 100% genuine reviews on Trustpilot.


Our S2SST course is for people who work in construction, either in a supervisory role or wanting to step up. S2SST is the direct equivalent to the CITB SSSTS course and gives you complete understanding of the legal framework and the associated requirements of a supervisory role. This includes critical learnings on Health & Safety, risk assessments, site inductions, bad practice interventions and more. 


Enhance your career opportunities by advancing up the career ladder and increase your annual income potential by £10,000 to £12,000 through full certification as a Site Supervisor. Our comprehensive course equips you with the essential foundations required to attain this status. Upon completion, you will receive a 5-year valid certification and be officially listed on the CITB register as a fully certified Site Supervisor.


Please note:  We have requested ECS include S2SST as an approved Supervision course and this approval is pending.  Anyone wanting the training for this reason should check its status with ECS prior purchasing it.

Course Benefits

At COSAC, we offer the SSSTS course as an exclusive online option, making it the only CITB approved 100% flexible site supervision course. Unlike classroom or remotely delivered courses – which you have to book in advance and attend for two days – S2SST is available right now, takes half the time to complete and also means that there is no time off site needed to get qualified.

Learn at home

Our online course is convenient – no travel to a training venue or taking time off work.

CITB Endorsed

S2SST is the only CITB approved Site Supervision training course that is 100% online and thus 100% flexible.

100% online

No need to reserve a place – you can start learning now and get tested at any time of day/night.

Flexible around you

Get certified in an 8-10 hour sitting – or fit your learning around a busy schedule over several days.


Sign up to our course via our website. Ask customer service team any questions you may have around setting up your account or logistics around taking the test

Order your copy of the CITB Site Safety Plus, Construction Site Supervision Book GE706 (hard copy or eBook)

Log in to your online E-portal

Complete your training course online

Take the safe2site supervision training test, anytime 24/7

Receive certification within 24 hours! *the average time is 4 hours*

How It Works


Buy Safe2Site online course

First, click the ‘Buy Now’ button below this section to begin the process.


Enable Group Purchase

Simply tick the box next to ‘Enable Group Purchase’. 


Choose the number of courses

Then select or input how many CSCS courses you require.


Add to Basket

Simply select ‘Add to Basket’ and then you can proceed to check out! 

Safe2Site Supervisor Training

First, click the 'Buy Now' button below this section to begin the process.

Safe2Site Online CSCS

Add To Basket

Simply select 'Add To Basket' and then you can proceed to checkout.


Complete Your Purchase

Enter in the details required, including payment details. Check out and your course will be emailed to you.

Safe2Site Supervisor Training

Receive Your Login Credentials

Your login credentials will be emailed to you. Using the username and password provided, login with the link.

Safe2Site Online CSCS

Start Your Course

Work through the modules one by one. These must be completed before taking your test.

Safe2Site Supervisor Training

Revise The Material

There are revision resources within your learning. You can repeat these as many times as you like.

Safe2Site Supervisor Training

Take Your Test

You are now ready to sit your test. Instructions will show you how to setup your device ready. Good luck!

Safe2Site Supervisor Training

Learning Outcomes

You’ll receive a thorough, highly relevant understanding of the legal framework and associated requirements expected of a supervisory role within construction.


By the end of our S2SST course, you’ll have a full understanding of:

Health & Safety law and how it applies to supervisors

Your supervisory responsibilities in controlling the site safely

Risk assessments and the need for method statements

Effective site inductions and toolbox talks

Effective method statement briefings

Effective monitoring of site activities

Timely intervention when bad practice is identified

The certification for this course will be valid for 5 years. Please note, to remain certified, you’ll need to take a refresher course before the expiry date on your certificate. Otherwise, the full course will need to be retaken.

Why choose COSAC?

COSAC is a market leading academy that offers training and assessment, combining a people-first approach with high tech innovation. Based in the UK, we were the first to develop a CSCS approved online alternative course for the Green Labourer Card – Safe2Site. Now we’re offering the first and only CITB endorsed online alternative to SSSTS.


By choosing COSAC for S2SST, you’re guaranteed:

100% online training

100% flexibility

100% CITB approved

Complete your course in 8-10 hours

Get qualified without time off work

No classroom training

Valid for 5 years

A highly trusted training provider

24/7 testing

No booking required – available now!

Employers can buy in bulk

Introductory discount for a limited time

Safe2Site Supervisor Training

New to Safe2Site Supervision Training?

A supervisory role within construction requires you to have the ability to collaborate with other people and teams on-site, including contractors, employees and employers. Identifying hazards and risk on site is key to ensuring minimisation of accidents or injuries.


S2SST certification demonstrates you have the knowledge and skills to supervise effectively. It shows you’re capable of promoting the health, safety and welfare of everyone on site under your supervision. It also ensures you can comply with all relevant legislation surrounding on-site operations and projects.

Equipment you’ll need

CITB Construction Site Supervision publication (GE706 2020) Hard copy or eBook version

Optional - Pack of highlighters and pack of 3 colour Post-It notes (for course textbook use)

Access to a computer/laptop with a webcam for the test


Agree or strongly agree that Safe2Site is easy to use


Successful Safe2Site candidates


CSCS & CITB approved


Pass rate

What our clients say on Trustpilot

Check out our reviews

4.9 – Excellent

Sam Lowe
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All i can say is wow! Big thank you to cosac! My online training was incredibly simple. Brilliant set up and easy to navigate through! Would highly recommend them! 10/10. Awesome stuff!! Thank you so much.
Edward Acheampong
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The learning materials were very helpful and clear. I could combine work and learning without having to take day off. Taking the test online via a video link was very simple and good experience.
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Very simple to use and very helpful The course covers all aspects of questions that’s needed for test I would definitely recommend
Matt Jones
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Quick simple to use, everything explained properly. Very fast with certificate issuing. Good job
Sukhjinder Singh
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Excellent experience. The materials are really easy and simple and really easy to memorise. The test is simple as well.
George Tomkins
Read More
What a great experience, easy to follow instructions, clear communications from the start to the finish, they even wished me luck for my course and congratulated me when I passed. The course price is competitive but the service is first class.

Contact Us


Is Safe2Site Supervisor Training (S2SST) the same as CITB SSSTS course?

Yes is it.  Safe2Site Supervisor Training (S2SST) has been mapped against the same course standards and is approved and certificated by CITB.  S2SST is the only fully online course that has been approved by CITB as an equivalent to the SSSTS course.


This means that:

  • S2SST is accredited by CITB as an equivalent to the SSSTS course
  • S2SST appears on the CITB Training Directory
  • Anyone completing S2SST is trained to be a Site Supervisor and will receive a certificate valid for 5 years
  • All qualifications are uploaded on to CITB Training Register
  • S2SST is tier 2 CITB levy funded course

What is the S2SST course?

Safe2Site Supervision Training (S2SST), approved by CITB, is a fundamental training course that aims to improve the quality and safety of work across all construction sites. Throughout the course, you will be exposed to important scenarios underlying health, safety, and environmental issues so that you become aware of them, and know-how to resolve them. S2SST also covers the legal requirements that a company must follow while operating on a construction site.   


By the end of the S2SST course, you will have a good understanding in: 

  • Apply technical skills to create a safe working environment  
  • Ensuring that your organisation is exercising health and safety principles 
  • Undertaking risk assessments and creating a method statement  
  • Conducting briefs to the team and the company
  • Inducting new starters on to the site 
  • Overseeing all the operations on the site
  • Identifying issues with work that is being carried out 
  • Addressing problems associated with health, safety, and environment

Do ECS accept S2SST?

No, not at the moment.  We have requested ECS include S2SST as an approved Supervision course and this approval is pending.  Anyone wanting the training for this reason should check its status with ECS prior purchasing it.

Who is S2SST for?

The S2SST course is an industry-leading training course for all on-site supervisors and managers. It is the first step of understanding all the health and safety principles associated with working in a supervisory role on a construction site,

What is involved in an S2SST course?

You first need to have a copy of the CITB Site Safety Plus, Construction Site Supervision Book GE706 (hard copy or PDF) to complete this course. You refer to the book throughout and complete the online learning, which will take you approximately 8 hours. There is then a 30 minutes test and for the last 10 minutes you can refer to your book.

What does the S2SST cover?

There are five sections:

  • Legal and Management
  • Health and Welfare
  • General Safety
  • High Activities
  • Environment

What qualification do I get?

Safe2Site Supervision Training (S2SST).  The course is approved by CITB, it has been mapped to the same standards and is fully equivalent to SSSTS.

Why do the S2SST online?

  •  The interactive online course takes approximately 8 hours, plus a 30 minute final test
  • No need to sit in classroom or on zoom call
  • The course and test can be completed in one go or over a period of days or weeks
  • Return to the course as many times as you like, it will remember and track your progress
  • Tests are available anytime 24/7
  • The first time pass rate is over 97%, with 100% overall
  • Your certificate will be available to download within 24 hours of passing

What do you need to do the S2SST online course?

The course materials can be accessed on any device connected to the Internet, but for the final assessment, you must have access to a chrome book, desktop or laptop with the following:

  • A reliable internet connection, minimum continuous speed of 2mbps (You MUST use an up to date version of the Chrome browser to take your test).
  • A working microphone and webcam.
  • Your device must also meet the following criteria:



  • Windows 10 or higher Operating System
  • Intel Pentium 4 processor or later
  • 4GB of RAM


  • OS X El Capitan 10.11 or later.

I’m an employer looking to buy for my team, can I buy several Safe2Site Supervision Training (S2SST) courses?

  • Yes, absolutely, simply put in the quantity of the number you need in the checkout
  • We offer discounts for block and ongoing bookings, contact us for a quote

What’s included in the price?

  • Unrestricted access to the Safe2Site Supervision Training (S2SST) online course
  • The end of course online final test (using your own equipment) which will be recorded and validated
  • Your downloadable Safe2Site Supervision Training (S2SST) certificate

What does the final test involve?

  • Tests are available once you have completed all your modules
  • Tests are available anytime 24/7
  • Support is available Monday-Friday 9am-5pm
  • You are allowed 30 minutes to answer 30 multiple choice questions, including 10 minutes open book
  • You need to score 24 out of 30 to pass
  • You will need valid photographic ID (a passport or UK/EU driving licence)
  • You will receive your preliminary result and % score immediately
  • Certificate will be available to download within 24 hours
  • The cost of resitting a failed test is £35

What should I consider before I buy?

  •  Can I get a refund if I realise this isn’t the right course for me? You can request a refund within 14 days of purchase, but only if you haven’t accessed S2SST
  • Remember you need a copy of the CITB Site Safety Plus, Construction Site Supervision Book GE706 (hard copy or PDF version) to complete S2SST
  • Do I have access to the equipment that I need? To complete S2SST, you need access to a tablet, chrome book, desktop or laptop to take the final test. The learning materials can be accessed on any device.
  • Can I take S2SST in other languages? S2SST is only available in English and cannot be translated into any other languages
  • Can I get support for additional needs, such as dyslexia? Get in touch and we’ll tell you more about the support available

What mark do I need to get to pass the test?

The pass mark is 80% and all questions are equally weighted.  This means you need to score a minimum of 24 out of 30 to pass.

How long is S2SST valid for?

S2SST has to renewed every 5 years

What job prospects are available to me from completing the S2SST course?

This S2SST courseideal for construction Site Supervisors, Team Leaders and First-line Managers in the construction industry who would like to enhance their skills and progress in their roles.  This course is designed to teach the importance and benefits of risk assessment procedures and how to effectively communicate health and safety regulations to the team.

Our Accreditations

Safe2Site Online CSCS
Safe2Site Online CSCS
Safe2Site Online CSCS
Safe2Site Online CSCS
Safe2Site Online CSCS