This article describes the most recent research into the nature and extent of the link between relations, as assessed by the measure of Inter‐Groups Understanding (IGU) and relations as revealed by “industrial action”. The IGU permits comparison of firms through measurement of the characteristic atmosphere independently of specific sets of attitudes on either side. By trying to change the opposition's view of one's own attitudes and vice versa it's possible to see that positive changes in behaviour are likely to be reflected over time.