diff --git a/support-portal-backend/src/main/java/net/shyshkin/study/fullstack/supportportal/backend/domain/WorkingStatus.java b/support-portal-backend/src/main/java/net/shyshkin/study/fullstack/supportportal/backend/domain/WorkingStatus.java
index 96aec70..0cab3e9 100644
--- a/support-portal-backend/src/main/java/net/shyshkin/study/fullstack/supportportal/backend/domain/WorkingStatus.java
+++ b/support-portal-backend/src/main/java/net/shyshkin/study/fullstack/supportportal/backend/domain/WorkingStatus.java
@@ -3,5 +3,6 @@ package net.shyshkin.study.fullstack.supportportal.backend.domain;
 public enum WorkingStatus {
     ACTIVE,
     ON_LEAVE,
-    RETIRED
+    RETIRED,
+    INACTIVE
 }
\ No newline at end of file
diff --git a/support-portal-frontend/src/app/component/professor/professor.component.html b/support-portal-frontend/src/app/component/professor/professor.component.html
index 75ab10e..f85dcab 100644
--- a/support-portal-frontend/src/app/component/professor/professor.component.html
+++ b/support-portal-frontend/src/app/component/professor/professor.component.html
@@ -78,10 +78,12 @@
               <td (click)="onSelectProfessor(professor)">
                 <span class="status-badge" [class.status-active]="professor?.status === WorkingStatus.ACTIVE"
                   [class.status-leave]="professor?.status === WorkingStatus.ON_LEAVE"
-                  [class.status-retired]="professor?.status === WorkingStatus.RETIRED">
+                  [class.status-retired]="professor?.status === WorkingStatus.RETIRED"
+                  [class.status-inactive]="professor?.status === WorkingStatus.INACTIVE">
                   <i class="fa" [class.fa-check-circle]="professor?.status === WorkingStatus.ACTIVE"
                     [class.fa-pause-circle]="professor?.status === WorkingStatus.ON_LEAVE"
-                    [class.fa-times-circle]="professor?.status === WorkingStatus.RETIRED"></i>
+                    [class.fa-times-circle]="professor?.status === WorkingStatus.RETIRED"
+                    [class.fa-ban]="professor?.status === WorkingStatus.INACTIVE"></i>
                   {{ professor?.status }}
                 </span>
               </td>
@@ -150,7 +152,8 @@
                     </span>
                     <span class="status-badge" [class.status-active]="selectedProfessor.status === 'ACTIVE'"
                       [class.status-leave]="selectedProfessor.status === 'ON_LEAVE'"
-                      [class.status-retired]="selectedProfessor.status === 'RETIRED'">
+                      [class.status-retired]="selectedProfessor.status === 'RETIRED'"
+                      [class.status-inactive]="selectedProfessor.status === 'INACTIVE'">
                       {{ selectedProfessor.status }}
                     </span>
                   </div>
@@ -205,13 +208,13 @@
                 </div>
 
                 <div class="detail-row"
-                  *ngIf="selectedProfessor.certification || (selectedProfessor.training && selectedProfessor.status !== WorkingStatus.RETIRED)">
+                  *ngIf="selectedProfessor.certification || (selectedProfessor.training && selectedProfessor.status !== WorkingStatus.RETIRED && selectedProfessor.status !== WorkingStatus.INACTIVE)">
                   <div class="detail-section" *ngIf="selectedProfessor.certification">
                     <h5>Certification</h5>
                     <p>{{ selectedProfessor.certification }}</p>
                   </div>
                   <div class="detail-section"
-                    *ngIf="selectedProfessor.training && selectedProfessor.status !== WorkingStatus.RETIRED">
+                    *ngIf="selectedProfessor.training && selectedProfessor.status !== WorkingStatus.RETIRED && selectedProfessor.status !== WorkingStatus.INACTIVE">
                     <h5>Training</h5>
                     <p>{{ selectedProfessor.training }}</p>
                   </div>
@@ -329,6 +332,7 @@
                       <option [value]="WorkingStatus.ACTIVE">Active</option>
                       <option [value]="WorkingStatus.ON_LEAVE">On Leave</option>
                       <option [value]="WorkingStatus.RETIRED">Retired</option>
+                      <option [value]="WorkingStatus.INACTIVE">Inactive</option>
                     </select>
                   </div>
 
@@ -616,6 +620,7 @@
                       <option [value]="WorkingStatus.ACTIVE">Active</option>
                       <option [value]="WorkingStatus.ON_LEAVE">On Leave</option>
                       <option [value]="WorkingStatus.RETIRED">Retired</option>
+                      <option [value]="WorkingStatus.INACTIVE">Inactive</option>
                     </select>
                   </div>
 
@@ -714,9 +719,9 @@
                     </label>
                     <textarea id="editTraining" name="training" class="form-textarea" rows="2"
                       [(ngModel)]="selectedProfessor.training"
-                      [disabled]="selectedProfessor.status === WorkingStatus.RETIRED"></textarea>
-                    <small class="form-text text-muted" *ngIf="selectedProfessor.status === WorkingStatus.RETIRED">
-                      Training field is disabled for retired faculty
+                      [disabled]="selectedProfessor.status === WorkingStatus.RETIRED || selectedProfessor.status === WorkingStatus.INACTIVE"></textarea>
+                    <small class="form-text text-muted" *ngIf="selectedProfessor.status === WorkingStatus.RETIRED || selectedProfessor.status === WorkingStatus.INACTIVE">
+                      Training field is disabled for retired/inactive faculty
                     </small>
                   </div>
                 </div>
diff --git a/support-portal-frontend/src/app/component/professor/professor.component.ts b/support-portal-frontend/src/app/component/professor/professor.component.ts
index 451cef3..8674485 100644
--- a/support-portal-frontend/src/app/component/professor/professor.component.ts
+++ b/support-portal-frontend/src/app/component/professor/professor.component.ts
@@ -426,9 +426,10 @@ export class ProfessorComponent implements OnInit, OnDestroy {
     formData.append('description',    professor.description    || '');
     formData.append('certification',  professor.certification  || '');
 
-    // Only include training if NOT retired
+    // Only include training if NOT retired or inactive
     formData.append('training',
-      professor.status !== WorkingStatus.RETIRED ? (professor.training || '') : ''
+      (professor.status !== WorkingStatus.RETIRED && professor.status !== WorkingStatus.INACTIVE)
+        ? (professor.training || '') : ''
     );
 
     // ─── Work days ───────────────────────────────────────────────────────────
diff --git a/support-portal-frontend/src/app/enum/WorkingStatus.ts b/support-portal-frontend/src/app/enum/WorkingStatus.ts
index dc3be8d..d8754c7 100644
--- a/support-portal-frontend/src/app/enum/WorkingStatus.ts
+++ b/support-portal-frontend/src/app/enum/WorkingStatus.ts
@@ -2,5 +2,6 @@
 export enum WorkingStatus {
   ACTIVE = 'ACTIVE',
   ON_LEAVE = 'ON_LEAVE',
-  RETIRED = 'RETIRED'
+  RETIRED = 'RETIRED',
+  INACTIVE = 'INACTIVE'
 }
\ No newline at end of file