diff --git a/src/main/java/com/gbcm/server/api/dto/client/ClientDTO.java b/src/main/java/com/gbcm/server/api/dto/client/ClientDTO.java
index c8dcdb7..a3c6e69 100644
--- a/src/main/java/com/gbcm/server/api/dto/client/ClientDTO.java
+++ b/src/main/java/com/gbcm/server/api/dto/client/ClientDTO.java
@@ -54,6 +54,18 @@ public class ClientDTO {
      */
     private BigDecimal annualRevenue;
 
+    /**
+     * Devise du chiffre d'affaires (Code ISO 4217).
+     */
+    @Size(min = 3, max = 3, message = "Le code devise doit faire 3 caractères")
+    private String revenueCurrency = "USD";
+
+    /**
+     * Locale préférée pour la communication (ex: fr-FR, en-US).
+     */
+    @Size(max = 20, message = "La locale ne peut pas dépasser 20 caractères")
+    private String preferredLocale = "fr-FR";
+
     /**
      * Adresse de l'entreprise - ligne 1.
      */
@@ -203,6 +215,22 @@ public class ClientDTO {
         this.annualRevenue = annualRevenue;
     }
 
+    public String getRevenueCurrency() {
+        return revenueCurrency;
+    }
+
+    public void setRevenueCurrency(String revenueCurrency) {
+        this.revenueCurrency = revenueCurrency;
+    }
+
+    public String getPreferredLocale() {
+        return preferredLocale;
+    }
+
+    public void setPreferredLocale(String preferredLocale) {
+        this.preferredLocale = preferredLocale;
+    }
+
     public String getAddressLine1() {
         return addressLine1;
     }
diff --git a/src/main/java/com/gbcm/server/api/dto/session/CoachingSessionDTO.java b/src/main/java/com/gbcm/server/api/dto/session/CoachingSessionDTO.java
index ed3306b..d439548 100644
--- a/src/main/java/com/gbcm/server/api/dto/session/CoachingSessionDTO.java
+++ b/src/main/java/com/gbcm/server/api/dto/session/CoachingSessionDTO.java
@@ -100,6 +100,18 @@ public class CoachingSessionDTO {
      */
     private BigDecimal price;
 
+    /**
+     * Devise du prix (Code ISO 4217, ex: USD, XOF, EUR).
+     */
+    @Size(min = 3, max = 3, message = "Le code devise doit faire 3 caractères")
+    private String priceCurrency = "USD";
+
+    /**
+     * Fuseau horaire de la session (ex: Africa/Abidjan, America/New_York).
+     */
+    @Size(max = 50, message = "Le fuseau horaire ne peut pas dépasser 50 caractères")
+    private String timeZone = "UTC";
+
     /**
      * Statut de la session.
      */
@@ -281,6 +293,22 @@ public class CoachingSessionDTO {
         this.price = price;
     }
 
+    public String getPriceCurrency() {
+        return priceCurrency;
+    }
+
+    public void setPriceCurrency(String priceCurrency) {
+        this.priceCurrency = priceCurrency;
+    }
+
+    public String getTimeZone() {
+        return timeZone;
+    }
+
+    public void setTimeZone(String timeZone) {
+        this.timeZone = timeZone;
+    }
+
     public SessionStatus getStatus() {
         return status;
     }
diff --git a/src/main/java/com/gbcm/server/api/dto/workshop/WorkshopDTO.java b/src/main/java/com/gbcm/server/api/dto/workshop/WorkshopDTO.java
index ac9872a..98beb5f 100644
--- a/src/main/java/com/gbcm/server/api/dto/workshop/WorkshopDTO.java
+++ b/src/main/java/com/gbcm/server/api/dto/workshop/WorkshopDTO.java
@@ -95,6 +95,18 @@ public class WorkshopDTO {
      */
     private BigDecimal price;
 
+    /**
+     * Devise du prix (Code ISO 4217, ex: USD, XOF, EUR).
+     */
+    @Size(min = 3, max = 3, message = "Le code devise doit faire 3 caractères")
+    private String priceCurrency = "USD";
+
+    /**
+     * Fuseau horaire de l'atelier (ex: Africa/Abidjan, America/New_York).
+     */
+    @Size(max = 50, message = "Le fuseau horaire ne peut pas dépasser 50 caractères")
+    private String timeZone = "UTC";
+
     /**
      * Statut de l'atelier.
      */
@@ -253,6 +265,22 @@ public class WorkshopDTO {
         this.price = price;
     }
 
+    public String getPriceCurrency() {
+        return priceCurrency;
+    }
+
+    public void setPriceCurrency(String priceCurrency) {
+        this.priceCurrency = priceCurrency;
+    }
+
+    public String getTimeZone() {
+        return timeZone;
+    }
+
+    public void setTimeZone(String timeZone) {
+        this.timeZone = timeZone;
+    }
+
     public String getStatus() {
         return status;
     }
@@ -331,8 +359,8 @@ public class WorkshopDTO {
      * @return true si l'atelier est complet
      */
     public boolean isFull() {
-        return currentParticipants != null && maxParticipants != null && 
-               currentParticipants >= maxParticipants;
+        return currentParticipants != null && maxParticipants != null &&
+                currentParticipants >= maxParticipants;
     }
 
     /**