H&S isn’t just about documents anymore, and particularly in civils, you may be requested to get NRSWA training for operatives that work on or near highways.
The staple documents needed for most principal contractors include:
Risk assessments: These are documents are a legal requirement, and assess a task for potential hazards and the likelihood of them occurring. If risks are found then control measures are documented that either eliminate the risks or bring them down to acceptable levels.
Method statements: These are not required by law, but usually need to be provided at a principal contractors behest and they list the order of works and any safe working practices that need to be followed.
COSHH assessments: These are a legal requirement and show the work exposure limit, hazards to health and environment, first aid and fire fighting measures of substances that are used or that people may come into contact with in the workplace.
All of the above documents are included in this H&S package.
Additionally you will need a company H&S policy by law if you employ 5 or more people, and you may need addition documents such as an equality and diversity policy or and anti slavery policy if requested by principal contractor.