Funds will support UK companies in areas such as clean energy, fintech and medical technology, aiming to create skilled jobs across the country.
Claire Haley said: “This accolade reflects the dedication and collaborative efforts of our colleagues who provide internal health, safety, and wellbeing services across all divisions."
The White Paper found social dining and community-focused spaces encourage conversation and help reduce loneliness among staff.
Mental health conditions were the main driver, with 964,000 workers reporting stress, depression or anxiety caused or made worse by work.
The first £400m investment is set to deliver nearly 3,000 new homes, more than 22,000 jobs, and 2 million square feet of employment space.
The swap provides protection against the risk of rising costs if members live longer than expected, covering nearly all pensioner and dependant liabilities in the Scheme.
Three quarters rated their mental health as good or excellent, compared with a 62% average across all ages.
Jacqui Carr, CEO at Health Shield, said: “With our shared railway heritage, it has been a privilege to collaborate on initiatives that positively impact the railway community."
71% of SMEs offer at least one wellbeing initiative, but uptake drops among smaller firms due to limits on time, resources and expertise.
The research found 74% would rather move to a new role with better pay than negotiate at their current workplace.
According to research by BT Business, 71% of workers said innovations like AI would drive efficiency, and 66% believe it will improve work-life balance.
Data showed that there have been 322 UK Employment Tribunal cases since 2017 linked to festive celebrations.