CITB-Construction Skills chief executive Peter Lobban announced at last week's summit that the organisation was slashing the cost of the construction health and safety test.
The price of the test, which every worker must pass in order to gain a Construction Skills Certification Scheme card, will be reduced from £35 to £17.50 from April 4.
The move follows negotiations with test provider Thompson Prometric.
Mr Lobban said: 'We believe that the revised test price will realise savings for the industry of £4 million a year, which can be invested in further training.'
The test has also been updated to take account of changes in legislation and to ensure it focuses on health and safety issues, rather than candidates' understanding of English.
There will also be 23 mobile centres to bring the test to major sites, on top of the 150 testing centres already up and running.
Mr Lobban said the revamped test formed part of the organisation's £150,000 safety awareness campaign, launched last week.