diff --git a/libs/event-emitter/src/issue-enhancers/issue-enhancer-interface.ts b/libs/event-emitter/src/issue-enhancers/issue-enhancer-interface.ts
new file mode 100644
index 0000000..3a55dfd
--- /dev/null
+++ b/libs/event-emitter/src/issue-enhancers/issue-enhancer-interface.ts
@@ -0,0 +1,5 @@
+import { RedmineTypes } from '../models/redmine-types';
+
+export interface IssueEnhancerInterface {
+  enhance(issue: RedmineTypes.Issue): RedmineTypes.Issue & Record<string, any>;
+}
diff --git a/libs/event-emitter/src/issue-enhancers/timestamps-enhancer.ts b/libs/event-emitter/src/issue-enhancers/timestamps-enhancer.ts
new file mode 100644
index 0000000..602fbe7
--- /dev/null
+++ b/libs/event-emitter/src/issue-enhancers/timestamps-enhancer.ts
@@ -0,0 +1,36 @@
+import { RedmineTypes } from '../models/redmine-types';
+import { IssueEnhancerInterface } from './issue-enhancer-interface';
+
+export class TimestampEnhancer implements IssueEnhancerInterface {
+  enhance(issue: RedmineTypes.Issue): RedmineTypes.Issue & Record<string, any> {
+    return this.createTimestamp(this.enhanceJournal(issue), [
+      'closed_on',
+      'created_on',
+      'updated_on',
+    ]) as RedmineTypes.Issue & Record<string, any>;
+  }
+
+  private enhanceJournal(issue: Record<string, any>): Record<string, any> {
+    if (!issue.journals || issue.journals.length === 0) {
+      return issue;
+    }
+    const journals = issue.journals;
+    for (let i = 0; i < journals.length; i++) {
+      journals[i] = this.createTimestamp(journals[i], ['created_on']);
+    }
+    return issue;
+  }
+
+  private createTimestamp(
+    issue: Record<string, any>,
+    fieldNames: string[],
+  ): Record<string, any> {
+    for (let i = 0; i < fieldNames.length; i++) {
+      const fieldName = fieldNames[i];
+      if (issue[fieldName]) {
+        issue[`${fieldName}_timestamp`] = new Date(issue[fieldName]).getTime();
+      }
+    }
+    return issue;
+  }
+}