diff --git a/pom.xml b/pom.xml
index f68bdb83..e50b90fe 100644
--- a/pom.xml
+++ b/pom.xml
@@ -11,8 +11,8 @@
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-compiler-plugin</artifactId>
 				<configuration>
-					<source>16</source>
-					<target>16</target>
+					<source>15</source>
+					<target>15</target>
 				</configuration>
 			</plugin>
 		</plugins>
diff --git a/src/main/java/com/ipiecoles/java/java220/Cadre.java b/src/main/java/com/ipiecoles/java/java220/Cadre.java
new file mode 100644
index 00000000..0c789ac7
--- /dev/null
+++ b/src/main/java/com/ipiecoles/java/java220/Cadre.java
@@ -0,0 +1,63 @@
+package com.ipiecoles.java.java220;
+
+import org.joda.time.LocalDate;
+
+import java.util.Objects;
+
+public class Cadre extends Employe{
+
+    private Double coefficient = 1d;
+
+    public Cadre(Double coefficient) {
+        this.coefficient = coefficient;
+    }
+
+    public Cadre(String nom, String prenom, String matricule, LocalDate dateEmbauche, Double salaire, Double coefficient) {
+        super(nom, prenom, matricule, dateEmbauche, salaire);
+        this.coefficient = coefficient;
+    }
+
+    public Cadre(String nom, String prenom, String matricule, LocalDate dateEmbauche, Double salaire, Boolean tempsPartiel, String sexe, Double coefficient) {
+        super(nom, prenom, matricule, dateEmbauche, salaire, tempsPartiel, sexe);
+        this.coefficient = coefficient;
+    }
+
+    public Double getCoefficient() {
+        return coefficient;
+    }
+
+    public void setCoefficient(Double coefficient) {
+        this.coefficient = coefficient;
+    }
+
+    @Override
+    public Double getPrimeAnnuelle() {
+        return Entreprise.primeAnnuelleBase() * this.coefficient;
+    }
+
+    @Override
+    public Integer getNbConges(){
+        return Entreprise.NB_CONGES_BASE+ (int) Math.round(this.coefficient);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        if (!super.equals(o)) return false;
+        Cadre cadre = (Cadre) o;
+        return Objects.equals(coefficient, cadre.coefficient);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(super.hashCode(), coefficient);
+    }
+
+    @Override
+    public String toString() {
+        return "Cadre{" +
+                "coefficient=" + coefficient +
+                '}';
+    }
+}
diff --git a/src/main/java/com/ipiecoles/java/java220/Commercial.java b/src/main/java/com/ipiecoles/java/java220/Commercial.java
new file mode 100644
index 00000000..0e6c6aff
--- /dev/null
+++ b/src/main/java/com/ipiecoles/java/java220/Commercial.java
@@ -0,0 +1,79 @@
+package com.ipiecoles.java.java220;
+
+import org.joda.time.LocalDate;
+
+import java.util.Objects;
+
+public class Commercial extends Employe{
+    private Double caAnnuel;
+    private Integer performance;
+
+    public Commercial(){
+
+    }
+
+    public Commercial(String nom, String prenom, String matricule,
+                      LocalDate dateEmbauche, Double salaire, Double caAnnuel) {
+        super(nom, prenom, matricule, dateEmbauche, salaire);
+        this.caAnnuel = caAnnuel;
+    }
+
+    public Commercial(String nom, String prenom, String matricule, LocalDate dateEmbauche, Double salaire, Double caAnnuel, Integer performance) {
+        this(nom, prenom, matricule, dateEmbauche, salaire, caAnnuel);
+        this.performance = performance;
+    }
+
+    @Override
+    public Double getPrimeAnnuelle() {
+        if (this.caAnnuel == null){
+            return 500d;
+        }
+        return Math.max(Math.ceil(this.getCaAnnuel() * 0.05), 500d);
+    }
+
+    public boolean performanceEgale(Integer performance){
+        if (this.performance.equals(performance)){
+            return true;
+        }
+        else
+            return false;
+    }
+
+    public Double getCaAnnuel() {
+        return caAnnuel;
+    }
+
+    public void setCaAnnuel(Double caAnnuel) {
+        this.caAnnuel = caAnnuel;
+    }
+
+    public Integer getPerformance() {
+        return performance;
+    }
+
+    public void setPerformance(Integer performance) {
+        this.performance = performance;
+    }
+
+    @Override
+    public String toString() {
+        return "Commercial{" +
+                "caAnnuel=" + caAnnuel +
+                ", performance=" + performance +
+                '}';
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        if (!super.equals(o)) return false;
+        Commercial that = (Commercial) o;
+        return Objects.equals(caAnnuel, that.caAnnuel) && Objects.equals(performance, that.performance);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(super.hashCode(), caAnnuel, performance);
+    }
+}
diff --git a/src/main/java/com/ipiecoles/java/java220/Employe.java b/src/main/java/com/ipiecoles/java/java220/Employe.java
index c217a6f4..2305a390 100644
--- a/src/main/java/com/ipiecoles/java/java220/Employe.java
+++ b/src/main/java/com/ipiecoles/java/java220/Employe.java
@@ -1,7 +1,139 @@
 package com.ipiecoles.java.java220;
 
+import org.joda.time.LocalDate;
+
+import java.util.Objects;
+
 /**
  * Created by pjvilloud on 21/09/17.
  */
-public class Employe {
+public abstract class Employe {
+    private String nom;
+    private String prenom;
+    private String matricule;
+    private LocalDate dateEmbauche;
+    private Double salaire;
+    private Boolean tempsPartiel;
+    private String sexe;
+
+    public Employe() {
+    }
+
+    public Employe(String nom, String prenom, String matricule,
+                   LocalDate dateEmbauche, Double salaire) {
+        this.nom = nom;
+        this.prenom = prenom;
+        this.matricule = matricule;
+        this.dateEmbauche = dateEmbauche;
+        this.salaire = salaire;
+    }
+
+    public Employe(String nom, String prenom, String matricule, LocalDate dateEmbauche, Double salaire, Boolean tempsPartiel, String sexe) {
+        this.nom = nom;
+        this.prenom = prenom;
+        this.matricule = matricule;
+        this.dateEmbauche = dateEmbauche;
+        this.salaire = salaire;
+        this.tempsPartiel = tempsPartiel;
+        this.sexe = sexe;
+    }
+
+    public final Integer getNombreAnneeAnciennete (){
+        return LocalDate.now().getYear()- dateEmbauche.getYear();
+    }
+
+    public Integer getNbConges(){
+        return Entreprise.NB_CONGES_BASE;
+    }
+
+    public void augmenterSalaire(Double pourcentage){
+        this.salaire = this.getSalaire() * (1 + pourcentage);
+    }
+
+    public abstract Double getPrimeAnnuelle();
+
+    public String getNom() {
+        return nom;
+    }
+
+    public void setNom(String nom) {
+        this.nom = nom;
+    }
+
+    public String getPrenom() {
+        return prenom;
+    }
+
+    public void setPrenom(String prenom) {
+        this.prenom = prenom;
+    }
+
+    public String getMatricule() {
+        return matricule;
+    }
+
+    public void setMatricule(String matricule) {
+        this.matricule = matricule;
+    }
+
+    public void setSalaire(Double salaire) {
+        this.salaire = salaire;
+    }
+
+    public Boolean getTempsPartiel() {
+        return tempsPartiel;
+    }
+
+    public void setTempsPartiel(Boolean tempsPartiel) {
+        this.tempsPartiel = tempsPartiel;
+    }
+
+    public String getSexe() {
+        return sexe;
+    }
+
+    public void setSexe(String sexe) {
+        this.sexe = sexe;
+    }
+
+    public LocalDate getDateEmbauche() {
+        return dateEmbauche;
+    }
+
+    public void setDateEmbauche(LocalDate dateEmbauche) throws Exception {
+        if (dateEmbauche.isAfter(LocalDate.now())){
+            throw new Exception("La date d'embauche ne peut être postérieure à la date courante");
+        }
+        this.dateEmbauche = dateEmbauche;
+    }
+
+    public Double getSalaire() {
+        return salaire;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Employe employe = (Employe) o;
+        return Objects.equals(nom, employe.nom) && Objects.equals(prenom, employe.prenom) && Objects.equals(matricule, employe.matricule) && Objects.equals(dateEmbauche, employe.dateEmbauche) && Objects.equals(salaire, employe.salaire) && Objects.equals(tempsPartiel, employe.tempsPartiel) && Objects.equals(sexe, employe.sexe);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(nom, prenom, matricule, dateEmbauche, salaire, tempsPartiel, sexe);
+    }
+
+    @Override
+    public String toString() {
+        return "Employe{" +
+                "nom='" + nom + '\'' +
+                ", prenom='" + prenom + '\'' +
+                ", matricule='" + matricule + '\'' +
+                ", dateEmbauche=" + dateEmbauche +
+                ", salaire=" + salaire +
+                ", tempsPartiel=" + tempsPartiel +
+                ", sexe='" + sexe + '\'' +
+                '}';
+    }
 }
diff --git a/src/main/java/com/ipiecoles/java/java220/Entreprise.java b/src/main/java/com/ipiecoles/java/java220/Entreprise.java
new file mode 100644
index 00000000..e74904f9
--- /dev/null
+++ b/src/main/java/com/ipiecoles/java/java220/Entreprise.java
@@ -0,0 +1,15 @@
+package com.ipiecoles.java.java220;
+import org.joda.time.LocalDate;
+
+public class Entreprise {
+    public static final Double SALAIRE_BASE = 1480.27;
+    public static final Integer NB_CONGES_BASE = 25;
+    public static final Double INDICE_MANAGER = 1.3;
+    public static final Double PRIME_MANAGER_PAR_TECHNICIEN = 250.0;
+    public static final Double PRIME_ANCIENNETE = 100d;
+
+    public static Double primeAnnuelleBase(){
+        return LocalDate.now().getYear()/2d;
+    }
+
+}
diff --git a/src/main/java/com/ipiecoles/java/java220/Manager.java b/src/main/java/com/ipiecoles/java/java220/Manager.java
new file mode 100644
index 00000000..7c8489f2
--- /dev/null
+++ b/src/main/java/com/ipiecoles/java/java220/Manager.java
@@ -0,0 +1,65 @@
+package com.ipiecoles.java.java220;
+
+import org.joda.time.LocalDate;
+
+import java.util.HashSet;
+
+public class Manager extends Employe{
+
+    private HashSet<Technicien> equipe = new HashSet();
+
+    public  Manager(){
+
+    }
+
+    public Manager(String nom, String prenom, String matricule, LocalDate dateEmbauche, Double salaire, HashSet<Technicien> equipe) {
+        super(nom, prenom, matricule, dateEmbauche, salaire);
+        this.equipe = equipe;
+    }
+
+    @Override
+    public Double getPrimeAnnuelle() {
+        return Entreprise.primeAnnuelleBase() + equipe.size() * Entreprise.PRIME_MANAGER_PAR_TECHNICIEN;
+    }
+
+    public void ajoutTechnicienEquipe(Technicien technicien){
+        equipe.add(technicien);
+    }
+
+    public void ajoutTechnicienEquipe(String nom, String prenom, String matricule, LocalDate dateEmbauche, Double salaire, Integer grade) throws TechnicienException {
+        this.ajoutTechnicienEquipe(new Technicien(nom, prenom, matricule, dateEmbauche, salaire, grade));
+    }
+
+    @Override
+    public void setSalaire(Double salaire) {
+        super.setSalaire(salaire * Entreprise.INDICE_MANAGER + (salaire * equipe.size() / 10d));
+    }
+
+    public void augmenterSalaire(Double pourcentage) {
+        super.augmenterSalaire(pourcentage);
+        augmenterSalaireEquipe(pourcentage);
+    }
+
+    private void augmenterSalaireEquipe(Double pourcentage) {
+        for (Technicien technicien : equipe) {
+            technicien.augmenterSalaire(pourcentage);
+        }
+    }
+
+
+    public HashSet<Technicien> getEquipe() {
+        return equipe;
+    }
+
+    public void setEquipe(HashSet<Technicien> equipe) {
+        this.equipe = equipe;
+    }
+
+    private class TechnicienException extends Exception {
+    }
+
+    @Override
+    public String toString() {
+        return "Manager{} " + super.toString();
+    }
+}
diff --git a/src/main/java/com/ipiecoles/java/java220/Technicien.java b/src/main/java/com/ipiecoles/java/java220/Technicien.java
new file mode 100644
index 00000000..abaca1ca
--- /dev/null
+++ b/src/main/java/com/ipiecoles/java/java220/Technicien.java
@@ -0,0 +1,68 @@
+package com.ipiecoles.java.java220;
+
+import org.joda.time.LocalDate;
+
+import java.util.Objects;
+
+public class Technicien extends Employe implements Comparable<Technicien>{
+    private Integer grade;
+
+    public Technicien(){
+
+    }
+
+    public Technicien(String nom, String prenom, String matricule, LocalDate dateEmbauche, Double salaire, Integer grade) {
+        super(nom, prenom, matricule, dateEmbauche, salaire);
+        this.grade = grade;
+    }
+
+    @Override
+    public void setSalaire(Double salaire) {
+        super.setSalaire(salaire * (1 + grade / 10d));
+    }
+
+    @Override
+    public Integer getNbConges() {
+        return super.getNbConges() + this.getNombreAnneeAnciennete();
+    }
+
+    @Override
+    public Double getPrimeAnnuelle() {
+        return Entreprise.primeAnnuelleBase()* (1 + grade / 10d)
+                + Entreprise.PRIME_ANCIENNETE * this.getNombreAnneeAnciennete();
+    }
+
+    public Integer getGrade() {
+        return grade;
+    }
+
+    public void setGrade(Integer grade) {
+
+        this.grade = grade;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        if (!super.equals(o)) return false;
+        Technicien that = (Technicien) o;
+        return Objects.equals(grade, that.grade);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(super.hashCode(), grade);
+    }
+
+    @Override
+    public int compareTo(Technicien o) {
+        if (this.grade <o.getGrade()){
+            return -1;
+        }
+        else  if (this.grade > o.getGrade()){
+            return 1;
+        }
+        return 0;
+    }
+}
diff --git a/src/test/java/com/ipiecoles/java/java220/EntrepriseTest.java b/src/test/java/com/ipiecoles/java/java220/EntrepriseTest.java
index 8c239552..f9e84e02 100644
--- a/src/test/java/com/ipiecoles/java/java220/EntrepriseTest.java
+++ b/src/test/java/com/ipiecoles/java/java220/EntrepriseTest.java
@@ -116,7 +116,7 @@ public void exo003ProgGenerique() throws Exception {
 	class Derived extends Employe {
 		//A decommenter quand le constructeur avec les 5 arguments est codé
 		public Derived(String nom, String prenom, String matricule, LocalDate dateEmbauche, Double salaire) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException, InstantiationException {
-			//super(nom, prenom, matricule, dateEmbauche, salaire);
+			super(nom, prenom, matricule, dateEmbauche, salaire);
 		}
 
 		public Derived() {