Employees at a workplace knowing each others' salaries puts them in a better position in bargaining with management but it also makes it harder for management t

Employees at a workplace knowing each others' salaries puts them in a better position in bargaining with management but it also makes it harder for management to selectively give certain employees higher salaries - because the employees are talented or because the management happens to want to keep said (maybe talented) employees or because management just like certain employees or because management just wants bargain each employee down to minimum management thinks they'll take. So the question is what situation would someone think better serves their interests? Of course, whether one person describing their salary would evoke reciprocity or not is a question, whether another person would tell the truth is a question.