In other words, workers` acquired rights to better working and employment conditions cannot in principle be affected by a collective agreement, unless they were acquired on the basis of a previous agreement, which has been replaced by a subsequent agreement revoving them, which contains an expressly more important general promotion clause. If this is the case, the principle of “Conglobaço”, adopted by law as a criterion of greater eloquence, means that one or other individual aspect of the conditions of sale of employees may deteriorate (a situation qualified as an infringement of acquired rights by derogation from a previous agreement). The law also excludes, in the same article, the possibility of abolishing compulsory legislation or withdrawing a certain type of supplementary social benefits. See also the arbitral award. The provisions of collective agreements most often concern working time. These issues are, for example, systems for compensating for shiftwork, remuneration for shiftwork and weekly days off. Collective agreements in Germany are legally binding, which is accepted by the population and does not worry them.  [Failed verification] While in Britain there was (and still is) an attitude of “she and us” in labour relations, the situation is very different in post-war Germany and some other northern European countries. . .