Erklärung: La única referencia que encuentro son las "Cajas Populares Desjardins" de Quebec. Parece que este modelo de insitución financiera es más latino que anglofón, asi que en inglés lo traducen en general como "Credit Union" y luego lo explican. Posiblemente tu pudieras hcer lo mismo. A continuación par de párrafos que copié de la página Internet de Desjardins en Canadá. ¡Espero te sirva!
Desjardins Group is an organization of caisses populaires and caisses d'économie (credit unions). The 671 Desjardins caisses in Québec as at December 31, 2002 and their service centres are assembled under a single Federation: the Fédération des caisses Desjardins du Québec.
The caisse populaire is a cooperative, the members of which are generally people living in a given geographical sector, such as the same town or neighborhood. Most Québecers are members of the Desjardins caisse that is closest to their home or workplace.
The credit union is also a cooperative, like the caisse populaire. However, in the majority of cases, membership in a credit union is based on belonging to a certain profession, or sharing a common workplace. For example, there is the Caisse d'économie des travailleurs de l'Outaouais, which serves members in the educational sector, and the Caisse d'économie des employés municipaux de Montréal for municipal workers.
The translation workplace 
