The Chamber of Commerce and Employers' Association Winterthur HAW maintains local contacts to several business associations and is associated with them in separate interest groups.
The Home Owners' Association (HEV) Winterthur supports the interests of homeowners in the districts of Andelfingen, Pfäffikon and Winterthur.
The purpose of the City Association (Junge Altstadt) is to promote Winterthur's old town and neighboring areas in the sense of active location marketing and the creation of business-friendly framework conditions.
The SME Association (KMU Verband) represents the concerns of small and medium-sized enterprises (SMEs) as well as member organizations from Winterthur and the region. He works for the best possible framework conditions and strengthens the competitiveness of the members with targeted services.