There is no mention of negotiation through collective agreement.

pg. 68

“Sika operates in 101 countries with both small and large subsidiaries. In many of the smaller companies, the number of employees is low and no collective bargaining agreements exist. However, in many big countries, e.g., USA, Germany, France, etc., collective bargaining agreements for workers are the rule, and most workers at these locations are covered. In 2022, almost 33% of the total workforce was covered either by trade unions or work councils, while roughly 43% of the total workforce was bound by collective bargaining agreements.”