Posted By Jim Evans The Construction Design and Management regulations 1994 states when a project is ‘notifable’ that is when there are more than 500 person days involved and/or it lasts more than 30 days. It also states that there needs to be more than 4 people at work at any one time. Does the ‘4 people’ requirement include a night shift? For example there may be 3 on days and 3 on nights, a total of 6 people. My view is that the ‘ at any one time’ means just that and only the number on each shift is counted. Am I correct? Also, what constitutes a ‘person day’ many projects involve overtime and a day can be 12 hours long. So is a ‘person day’ a day at work regardless of the hours worked?

Posted By Robert K Lewis The new revised Acop is much more user friendly on this and other points - At para 43 it states that " the total person days is the total number of shifts worked by everybody" therefore each shift is a day for each person - thus you have 6 person days each day. Get a copy of the new Acop - it is HSG 224 Managing Health and Safety in Construction (Design and Management) Regulations 1994 - It is to be fully in effect from 1st February 2002 Bob