Industrial safety measures are to be improved following an increase in the number of accidents involving machines on airport-related projects. Under laws to be put forward in October, operators of earth movers, caisson workers, and fork-lift drivers will have to pass tests to continue working, Deputy Commissioner for Labour Lee Kai-fat said. The move comes a year after the department introduced certification tests for machine operators. There were 214 industrial accidents related to mishandling of machines in the first quarter of this year, compared with 143 in the same period of last year. Mr Lee said most accidents were on airport-related projects.