diff --git a/src/app/ep/details-ep/details-ep.component.html b/src/app/ep/details-ep/details-ep.component.html
index a9ecfef..6102c39 100644
--- a/src/app/ep/details-ep/details-ep.component.html
+++ b/src/app/ep/details-ep/details-ep.component.html
@@ -49,10 +49,10 @@
             </mat-vertical-stepper>
         </mat-tab>
 
-        <mat-tab label="Les engagements">
+        <mat-tab label="Les engagements" *ngIf="afficherDemandesFormationEtEngagements()">
             <ep-engagements [engagements]="ep.engagements"></ep-engagements>
         </mat-tab>
-        <mat-tab label="Les demandes de formation">
+        <mat-tab label="Les demandes de formation" *ngIf="afficherDemandesFormationEtEngagements()">
             <ep-demandes-formation [demandesFormation]="ep.demandesFormation"></ep-demandes-formation>
         </mat-tab>
 
@@ -60,14 +60,15 @@
             <ep-commentaires-assistant [ep]="ep"></ep-commentaires-assistant>
         </mat-tab>
 
-        <mat-tab label="Choix de dates"> 
+        <mat-tab label="Choix de dates" *ngIf="afficherChoixDates()" > 
             <ep-choix-date [rdvsEntretien]="ep.propositionsEntretien"></ep-choix-date>
         </mat-tab>
 
-        <mat-tab label="Proposition de date">
+        <mat-tab label="Proposition de date" *ngIf="epNonEffectue()">
             <ep-propositions-dates [choixTypeEntretien]="ep.choixTypeEntretien"></ep-propositions-dates>
         </mat-tab>
-        <mat-tab label="Demande délégation">
+        
+        <mat-tab label="Demande délégation" *ngIf="epNonEffectue()">
             <ep-demande-delegation [demande]="ep.demandesDelegation"></ep-demande-delegation>
         </mat-tab>
         <mat-tab label="Les participants">
diff --git a/src/app/ep/details-ep/details-ep.component.ts b/src/app/ep/details-ep/details-ep.component.ts
index a3a0b0d..bc9575c 100644
--- a/src/app/ep/details-ep/details-ep.component.ts
+++ b/src/app/ep/details-ep/details-ep.component.ts
@@ -1,6 +1,6 @@
 import { Component, OnInit } from "@angular/core";
 import { ActivatedRoute } from "@angular/router";
-import { affichageStatut, EpDTO, EpService, StatutEp } from "@shared/api-swagger";
+import { affichageStatut, EpDTO, EpService, StatutEp, estEPEnCours, estEPSigne, estEPEnAttenteSignatureCollaborateur, estEPEffectue } from "@shared/api-swagger";
 import { AuthService } from "@shared/auth/auth.service";
 import { Role } from "@shared/utils/roles";
 import { Subscription } from "rxjs";
@@ -38,7 +38,21 @@ export class DetailsEPComponent implements OnInit {
         );
     }
 
+    afficherDemandesFormationEtEngagements() {
+        return estEPSigne(this.ep.statut) || estEPEnAttenteSignatureCollaborateur(this.ep.statut);
+    }
+
     afficherTypeEP(statutEP: StatutEp) {
         return affichageStatut(statutEP);
     }
+
+
+    afficherChoixDates() {
+        return this.ep.statut == StatutEp.DatesProposees;
+    }
+
+    epNonEffectue() {
+        return estEPEnCours(this.ep.statut) && !estEPEnAttenteSignatureCollaborateur(this.ep.statut) && !estEPEffectue(this.ep.statut);
+    }
+    
 }
\ No newline at end of file
diff --git a/src/app/ep/details-ep/ep-demandes-formation/ep-demandes-formation.component.html b/src/app/ep/details-ep/ep-demandes-formation/ep-demandes-formation.component.html
index 7755c66..69bf891 100644
--- a/src/app/ep/details-ep/ep-demandes-formation/ep-demandes-formation.component.html
+++ b/src/app/ep/details-ep/ep-demandes-formation/ep-demandes-formation.component.html
@@ -1,2 +1,2 @@
 <h3 *ngIf="demandesFormation == undefined || demandesFormation == []">Aucune demande de formation</h3>
-<demandes-formation-table *ngIf="demandesFormation != undefined && demandesFormation != []" [displayedColumns]="displayedColumns" [estAffichageEP]="estAffichageEP" [demandesFormation]="demandesFormation"  ></demandes-formation-table>
\ No newline at end of file
+<demandes-formation-table *ngIf="demandesFormation != undefined && demandesFormation.length != 0" [displayedColumns]="displayedColumns" [estAffichageEP]="estAffichageEP" [demandesFormation]="demandesFormation"  ></demandes-formation-table>
\ No newline at end of file
diff --git a/src/app/ep/details-ep/ep-engagements/ep-engagements.component.html b/src/app/ep/details-ep/ep-engagements/ep-engagements.component.html
index 9cd3df8..4bca14c 100644
--- a/src/app/ep/details-ep/ep-engagements/ep-engagements.component.html
+++ b/src/app/ep/details-ep/ep-engagements/ep-engagements.component.html
@@ -1,8 +1,8 @@
-<ng-container *ngIf="engagements == undefined || engagements == []">
+<ng-container *ngIf="engagements == undefined || engagements.length == 0">
     <h3>Aucun engagements pris</h3>
 </ng-container>
 
-<ng-container *ngIf="engagements != undefined && engagements != []">
+<ng-container *ngIf="engagements != undefined && engagements.length != 0">
     <engagements-table [displayedColumns]="displayedColumns" [estAffichageEP]="estAffichageEP" [engagementsSaisis]="engagements"></engagements-table>
 </ng-container>
 
diff --git a/src/app/ep/details-ep/ep-participants/new-participant/new-participant.component.html b/src/app/ep/details-ep/ep-participants/new-participant/new-participant.component.html
deleted file mode 100644
index 8aff52c..0000000
--- a/src/app/ep/details-ep/ep-participants/new-participant/new-participant.component.html
+++ /dev/null
@@ -1,2 +0,0 @@
-<app-nav-menu></app-nav-menu>
-<h1>New participant </h1>
diff --git a/src/app/ep/details-ep/ep-participants/new-participant/new-participant.component.ts b/src/app/ep/details-ep/ep-participants/new-participant/new-participant.component.ts
deleted file mode 100644
index e8232e3..0000000
--- a/src/app/ep/details-ep/ep-participants/new-participant/new-participant.component.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-import { Component, OnInit } from '@angular/core';
-
-/**
-  * Composant permettant l'ajout d'un participant à un EP
-  * Ce composant pourrait être remplacé par un dialog de material angular
-  */
-@Component({
-  selector: 'app-new-participant',
-  templateUrl: './new-participant.component.html'
-})
-export class NewParticipantComponent implements OnInit {
-
-  constructor() {}
-
-  ngOnInit() {
-  }
-}
diff --git a/src/app/shared/api-swagger/model/statutEp.ts b/src/app/shared/api-swagger/model/statutEp.ts
index e490643..1537c12 100644
--- a/src/app/shared/api-swagger/model/statutEp.ts
+++ b/src/app/shared/api-swagger/model/statutEp.ts
@@ -40,6 +40,18 @@ export function estEPEnCours (statut:StatutEp) {
     return statut != StatutEp.Annule && statut != StatutEp.Cree && statut != StatutEp.Rejete && statut != StatutEp.Signe
 }
 
+export function estEPEffectue(statut: StatutEp) {
+    return statut == StatutEp.Effectue;
+}
+
+export function estEPEnAttenteSignatureCollaborateur(statut: StatutEp) {
+    return statut == StatutEp.SignatureReferent;
+}
+
+export function estEPSigne( statut : StatutEp) {
+    return statut == StatutEp.Signe;
+}
+
 export function affichageStatut(statut: StatutEp) {
     switch(statut) {
         case StatutEp.Cree: