The NASC 2013 Safety Report shows that the 201 companies had 134 injuries within their ranks in 2012, down from 145 in 2011.
The statistics cover a total of 14,098 operatives.
There was one fatality in 2012 – the first since 2004. Slips, trips and falls remain the major cause of accidents and injuries in the industry, making up 34%.
Manual handling injuries decreased from 37 to 17, a reduction of 54%.
Falls from height accidents increased from 27 to 32 in 2012, while falls from ladders remained static at five incidents.
NASC health and safety committee chairman Adrian Rooney said: “We have, yet again, seen a fall in overall figures for accidents/incidents, despite an increase in the number of operatives. But most heartening is the correlation between member figures and those for our industry as a whole – which shows that NASC members continue to outperform the industry.
NASC managing director Robin James added: “Once again, our annual Safety Report has revealed some interesting and positive statistics and provided engaging analysis, which we can use to help raise standards and levels of safety in the scaffolding and access industry.”