diff --git a/lib/taskana-core/src/main/java/pro/taskana/impl/ClassificationImpl.java b/lib/taskana-core/src/main/java/pro/taskana/impl/ClassificationImpl.java
index d3da95f00..542c66561 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/impl/ClassificationImpl.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/impl/ClassificationImpl.java
@@ -315,4 +315,199 @@ public class ClassificationImpl implements Classification {
         builder.append("]");
         return builder.toString();
     }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + ((applicationEntryPoint == null) ? 0 : applicationEntryPoint.hashCode());
+        result = prime * result + ((category == null) ? 0 : category.hashCode());
+        result = prime * result + ((created == null) ? 0 : created.hashCode());
+        result = prime * result + ((custom1 == null) ? 0 : custom1.hashCode());
+        result = prime * result + ((custom2 == null) ? 0 : custom2.hashCode());
+        result = prime * result + ((custom3 == null) ? 0 : custom3.hashCode());
+        result = prime * result + ((custom4 == null) ? 0 : custom4.hashCode());
+        result = prime * result + ((custom5 == null) ? 0 : custom5.hashCode());
+        result = prime * result + ((custom6 == null) ? 0 : custom6.hashCode());
+        result = prime * result + ((custom7 == null) ? 0 : custom7.hashCode());
+        result = prime * result + ((custom8 == null) ? 0 : custom8.hashCode());
+        result = prime * result + ((description == null) ? 0 : description.hashCode());
+        result = prime * result + ((domain == null) ? 0 : domain.hashCode());
+        result = prime * result + ((id == null) ? 0 : id.hashCode());
+        result = prime * result + ((isValidInDomain == null) ? 0 : isValidInDomain.hashCode());
+        result = prime * result + ((key == null) ? 0 : key.hashCode());
+        result = prime * result + ((modified == null) ? 0 : modified.hashCode());
+        result = prime * result + ((name == null) ? 0 : name.hashCode());
+        result = prime * result + ((parentId == null) ? 0 : parentId.hashCode());
+        result = prime * result + priority;
+        result = prime * result + ((serviceLevel == null) ? 0 : serviceLevel.hashCode());
+        result = prime * result + ((type == null) ? 0 : type.hashCode());
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        ClassificationImpl other = (ClassificationImpl) obj;
+        if (applicationEntryPoint == null) {
+            if (other.applicationEntryPoint != null) {
+                return false;
+            }
+        } else if (!applicationEntryPoint.equals(other.applicationEntryPoint)) {
+            return false;
+        }
+        if (category == null) {
+            if (other.category != null) {
+                return false;
+            }
+        } else if (!category.equals(other.category)) {
+            return false;
+        }
+        if (created == null) {
+            if (other.created != null) {
+                return false;
+            }
+        } else if (!created.equals(other.created)) {
+            return false;
+        }
+        if (custom1 == null) {
+            if (other.custom1 != null) {
+                return false;
+            }
+        } else if (!custom1.equals(other.custom1)) {
+            return false;
+        }
+        if (custom2 == null) {
+            if (other.custom2 != null) {
+                return false;
+            }
+        } else if (!custom2.equals(other.custom2)) {
+            return false;
+        }
+        if (custom3 == null) {
+            if (other.custom3 != null) {
+                return false;
+            }
+        } else if (!custom3.equals(other.custom3)) {
+            return false;
+        }
+        if (custom4 == null) {
+            if (other.custom4 != null) {
+                return false;
+            }
+        } else if (!custom4.equals(other.custom4)) {
+            return false;
+        }
+        if (custom5 == null) {
+            if (other.custom5 != null) {
+                return false;
+            }
+        } else if (!custom5.equals(other.custom5)) {
+            return false;
+        }
+        if (custom6 == null) {
+            if (other.custom6 != null) {
+                return false;
+            }
+        } else if (!custom6.equals(other.custom6)) {
+            return false;
+        }
+        if (custom7 == null) {
+            if (other.custom7 != null) {
+                return false;
+            }
+        } else if (!custom7.equals(other.custom7)) {
+            return false;
+        }
+        if (custom8 == null) {
+            if (other.custom8 != null) {
+                return false;
+            }
+        } else if (!custom8.equals(other.custom8)) {
+            return false;
+        }
+        if (description == null) {
+            if (other.description != null) {
+                return false;
+            }
+        } else if (!description.equals(other.description)) {
+            return false;
+        }
+        if (domain == null) {
+            if (other.domain != null) {
+                return false;
+            }
+        } else if (!domain.equals(other.domain)) {
+            return false;
+        }
+        if (id == null) {
+            if (other.id != null) {
+                return false;
+            }
+        } else if (!id.equals(other.id)) {
+            return false;
+        }
+        if (isValidInDomain == null) {
+            if (other.isValidInDomain != null) {
+                return false;
+            }
+        } else if (!isValidInDomain.equals(other.isValidInDomain)) {
+            return false;
+        }
+        if (key == null) {
+            if (other.key != null) {
+                return false;
+            }
+        } else if (!key.equals(other.key)) {
+            return false;
+        }
+        if (modified == null) {
+            if (other.modified != null) {
+                return false;
+            }
+        } else if (!modified.equals(other.modified)) {
+            return false;
+        }
+        if (name == null) {
+            if (other.name != null) {
+                return false;
+            }
+        } else if (!name.equals(other.name)) {
+            return false;
+        }
+        if (parentId == null) {
+            if (other.parentId != null) {
+                return false;
+            }
+        } else if (!parentId.equals(other.parentId)) {
+            return false;
+        }
+        if (priority != other.priority) {
+            return false;
+        }
+        if (serviceLevel == null) {
+            if (other.serviceLevel != null) {
+                return false;
+            }
+        } else if (!serviceLevel.equals(other.serviceLevel)) {
+            return false;
+        }
+        if (type == null) {
+            if (other.type != null) {
+                return false;
+            }
+        } else if (!type.equals(other.type)) {
+            return false;
+        }
+        return true;
+    }
+
 }
diff --git a/lib/taskana-core/src/main/java/pro/taskana/impl/TaskImpl.java b/lib/taskana-core/src/main/java/pro/taskana/impl/TaskImpl.java
index 14d264bf7..011475e2c 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/impl/TaskImpl.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/impl/TaskImpl.java
@@ -756,4 +756,322 @@ public class TaskImpl implements Task {
         return builder.toString();
     }
 
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + ((attachments == null) ? 0 : attachments.hashCode());
+        result = prime * result + ((businessProcessId == null) ? 0 : businessProcessId.hashCode());
+        result = prime * result + ((claimed == null) ? 0 : claimed.hashCode());
+        result = prime * result + ((classificationSummary == null) ? 0 : classificationSummary.hashCode());
+        result = prime * result + ((completed == null) ? 0 : completed.hashCode());
+        result = prime * result + ((created == null) ? 0 : created.hashCode());
+        result = prime * result + ((creator == null) ? 0 : creator.hashCode());
+        result = prime * result + ((custom1 == null) ? 0 : custom1.hashCode());
+        result = prime * result + ((custom10 == null) ? 0 : custom10.hashCode());
+        result = prime * result + ((custom11 == null) ? 0 : custom11.hashCode());
+        result = prime * result + ((custom12 == null) ? 0 : custom12.hashCode());
+        result = prime * result + ((custom13 == null) ? 0 : custom13.hashCode());
+        result = prime * result + ((custom14 == null) ? 0 : custom14.hashCode());
+        result = prime * result + ((custom15 == null) ? 0 : custom15.hashCode());
+        result = prime * result + ((custom16 == null) ? 0 : custom16.hashCode());
+        result = prime * result + ((custom2 == null) ? 0 : custom2.hashCode());
+        result = prime * result + ((custom3 == null) ? 0 : custom3.hashCode());
+        result = prime * result + ((custom4 == null) ? 0 : custom4.hashCode());
+        result = prime * result + ((custom5 == null) ? 0 : custom5.hashCode());
+        result = prime * result + ((custom6 == null) ? 0 : custom6.hashCode());
+        result = prime * result + ((custom7 == null) ? 0 : custom7.hashCode());
+        result = prime * result + ((custom8 == null) ? 0 : custom8.hashCode());
+        result = prime * result + ((custom9 == null) ? 0 : custom9.hashCode());
+        result = prime * result + ((customAttributes == null) ? 0 : customAttributes.hashCode());
+        result = prime * result + ((description == null) ? 0 : description.hashCode());
+        result = prime * result + ((due == null) ? 0 : due.hashCode());
+        result = prime * result + ((id == null) ? 0 : id.hashCode());
+        result = prime * result + (isRead ? 1231 : 1237);
+        result = prime * result + (isTransferred ? 1231 : 1237);
+        result = prime * result + ((modified == null) ? 0 : modified.hashCode());
+        result = prime * result + ((name == null) ? 0 : name.hashCode());
+        result = prime * result + ((note == null) ? 0 : note.hashCode());
+        result = prime * result + ((owner == null) ? 0 : owner.hashCode());
+        result = prime * result + ((parentBusinessProcessId == null) ? 0 : parentBusinessProcessId.hashCode());
+        result = prime * result + ((planned == null) ? 0 : planned.hashCode());
+        result = prime * result + ((primaryObjRef == null) ? 0 : primaryObjRef.hashCode());
+        result = prime * result + priority;
+        result = prime * result + ((state == null) ? 0 : state.hashCode());
+        result = prime * result + ((workbasketSummary == null) ? 0 : workbasketSummary.hashCode());
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        TaskImpl other = (TaskImpl) obj;
+        if (attachments == null) {
+            if (other.attachments != null) {
+                return false;
+            }
+        } else if (!attachments.equals(other.attachments)) {
+            return false;
+        }
+        if (businessProcessId == null) {
+            if (other.businessProcessId != null) {
+                return false;
+            }
+        } else if (!businessProcessId.equals(other.businessProcessId)) {
+            return false;
+        }
+        if (claimed == null) {
+            if (other.claimed != null) {
+                return false;
+            }
+        } else if (!claimed.equals(other.claimed)) {
+            return false;
+        }
+        if (classificationSummary == null) {
+            if (other.classificationSummary != null) {
+                return false;
+            }
+        } else if (!classificationSummary.equals(other.classificationSummary)) {
+            return false;
+        }
+        if (completed == null) {
+            if (other.completed != null) {
+                return false;
+            }
+        } else if (!completed.equals(other.completed)) {
+            return false;
+        }
+        if (created == null) {
+            if (other.created != null) {
+                return false;
+            }
+        } else if (!created.equals(other.created)) {
+            return false;
+        }
+        if (creator == null) {
+            if (other.creator != null) {
+                return false;
+            }
+        } else if (!creator.equals(other.creator)) {
+            return false;
+        }
+        if (custom1 == null) {
+            if (other.custom1 != null) {
+                return false;
+            }
+        } else if (!custom1.equals(other.custom1)) {
+            return false;
+        }
+        if (custom10 == null) {
+            if (other.custom10 != null) {
+                return false;
+            }
+        } else if (!custom10.equals(other.custom10)) {
+            return false;
+        }
+        if (custom11 == null) {
+            if (other.custom11 != null) {
+                return false;
+            }
+        } else if (!custom11.equals(other.custom11)) {
+            return false;
+        }
+        if (custom12 == null) {
+            if (other.custom12 != null) {
+                return false;
+            }
+        } else if (!custom12.equals(other.custom12)) {
+            return false;
+        }
+        if (custom13 == null) {
+            if (other.custom13 != null) {
+                return false;
+            }
+        } else if (!custom13.equals(other.custom13)) {
+            return false;
+        }
+        if (custom14 == null) {
+            if (other.custom14 != null) {
+                return false;
+            }
+        } else if (!custom14.equals(other.custom14)) {
+            return false;
+        }
+        if (custom15 == null) {
+            if (other.custom15 != null) {
+                return false;
+            }
+        } else if (!custom15.equals(other.custom15)) {
+            return false;
+        }
+        if (custom16 == null) {
+            if (other.custom16 != null) {
+                return false;
+            }
+        } else if (!custom16.equals(other.custom16)) {
+            return false;
+        }
+        if (custom2 == null) {
+            if (other.custom2 != null) {
+                return false;
+            }
+        } else if (!custom2.equals(other.custom2)) {
+            return false;
+        }
+        if (custom3 == null) {
+            if (other.custom3 != null) {
+                return false;
+            }
+        } else if (!custom3.equals(other.custom3)) {
+            return false;
+        }
+        if (custom4 == null) {
+            if (other.custom4 != null) {
+                return false;
+            }
+        } else if (!custom4.equals(other.custom4)) {
+            return false;
+        }
+        if (custom5 == null) {
+            if (other.custom5 != null) {
+                return false;
+            }
+        } else if (!custom5.equals(other.custom5)) {
+            return false;
+        }
+        if (custom6 == null) {
+            if (other.custom6 != null) {
+                return false;
+            }
+        } else if (!custom6.equals(other.custom6)) {
+            return false;
+        }
+        if (custom7 == null) {
+            if (other.custom7 != null) {
+                return false;
+            }
+        } else if (!custom7.equals(other.custom7)) {
+            return false;
+        }
+        if (custom8 == null) {
+            if (other.custom8 != null) {
+                return false;
+            }
+        } else if (!custom8.equals(other.custom8)) {
+            return false;
+        }
+        if (custom9 == null) {
+            if (other.custom9 != null) {
+                return false;
+            }
+        } else if (!custom9.equals(other.custom9)) {
+            return false;
+        }
+        if (customAttributes == null) {
+            if (other.customAttributes != null) {
+                return false;
+            }
+        } else if (!customAttributes.equals(other.customAttributes)) {
+            return false;
+        }
+        if (description == null) {
+            if (other.description != null) {
+                return false;
+            }
+        } else if (!description.equals(other.description)) {
+            return false;
+        }
+        if (due == null) {
+            if (other.due != null) {
+                return false;
+            }
+        } else if (!due.equals(other.due)) {
+            return false;
+        }
+        if (id == null) {
+            if (other.id != null) {
+                return false;
+            }
+        } else if (!id.equals(other.id)) {
+            return false;
+        }
+        if (isRead != other.isRead) {
+            return false;
+        }
+        if (isTransferred != other.isTransferred) {
+            return false;
+        }
+        if (modified == null) {
+            if (other.modified != null) {
+                return false;
+            }
+        } else if (!modified.equals(other.modified)) {
+            return false;
+        }
+        if (name == null) {
+            if (other.name != null) {
+                return false;
+            }
+        } else if (!name.equals(other.name)) {
+            return false;
+        }
+        if (note == null) {
+            if (other.note != null) {
+                return false;
+            }
+        } else if (!note.equals(other.note)) {
+            return false;
+        }
+        if (owner == null) {
+            if (other.owner != null) {
+                return false;
+            }
+        } else if (!owner.equals(other.owner)) {
+            return false;
+        }
+        if (parentBusinessProcessId == null) {
+            if (other.parentBusinessProcessId != null) {
+                return false;
+            }
+        } else if (!parentBusinessProcessId.equals(other.parentBusinessProcessId)) {
+            return false;
+        }
+        if (planned == null) {
+            if (other.planned != null) {
+                return false;
+            }
+        } else if (!planned.equals(other.planned)) {
+            return false;
+        }
+        if (primaryObjRef == null) {
+            if (other.primaryObjRef != null) {
+                return false;
+            }
+        } else if (!primaryObjRef.equals(other.primaryObjRef)) {
+            return false;
+        }
+        if (priority != other.priority) {
+            return false;
+        }
+        if (state != other.state) {
+            return false;
+        }
+        if (workbasketSummary == null) {
+            if (other.workbasketSummary != null) {
+                return false;
+            }
+        } else if (!workbasketSummary.equals(other.workbasketSummary)) {
+            return false;
+        }
+        return true;
+    }
+
 }
diff --git a/lib/taskana-core/src/main/java/pro/taskana/impl/WorkbasketAccessItemImpl.java b/lib/taskana-core/src/main/java/pro/taskana/impl/WorkbasketAccessItemImpl.java
index 445655ad8..752083c1e 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/impl/WorkbasketAccessItemImpl.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/impl/WorkbasketAccessItemImpl.java
@@ -428,4 +428,119 @@ public class WorkbasketAccessItemImpl implements WorkbasketAccessItem {
         builder.append("]");
         return builder.toString();
     }
+
+    @Override
+    public int hashCode() {
+        final int prime = 31;
+        int result = 1;
+        result = prime * result + ((accessId == null) ? 0 : accessId.hashCode());
+        result = prime * result + ((id == null) ? 0 : id.hashCode());
+        result = prime * result + (permAppend ? 1231 : 1237);
+        result = prime * result + (permCustom1 ? 1231 : 1237);
+        result = prime * result + (permCustom10 ? 1231 : 1237);
+        result = prime * result + (permCustom11 ? 1231 : 1237);
+        result = prime * result + (permCustom12 ? 1231 : 1237);
+        result = prime * result + (permCustom2 ? 1231 : 1237);
+        result = prime * result + (permCustom3 ? 1231 : 1237);
+        result = prime * result + (permCustom4 ? 1231 : 1237);
+        result = prime * result + (permCustom5 ? 1231 : 1237);
+        result = prime * result + (permCustom6 ? 1231 : 1237);
+        result = prime * result + (permCustom7 ? 1231 : 1237);
+        result = prime * result + (permCustom8 ? 1231 : 1237);
+        result = prime * result + (permCustom9 ? 1231 : 1237);
+        result = prime * result + (permDistribute ? 1231 : 1237);
+        result = prime * result + (permOpen ? 1231 : 1237);
+        result = prime * result + (permRead ? 1231 : 1237);
+        result = prime * result + (permTransfer ? 1231 : 1237);
+        result = prime * result + ((workbasketId == null) ? 0 : workbasketId.hashCode());
+        return result;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        WorkbasketAccessItemImpl other = (WorkbasketAccessItemImpl) obj;
+        if (accessId == null) {
+            if (other.accessId != null) {
+                return false;
+            }
+        } else if (!accessId.equals(other.accessId)) {
+            return false;
+        }
+        if (id == null) {
+            if (other.id != null) {
+                return false;
+            }
+        } else if (!id.equals(other.id)) {
+            return false;
+        }
+        if (permAppend != other.permAppend) {
+            return false;
+        }
+        if (permCustom1 != other.permCustom1) {
+            return false;
+        }
+        if (permCustom10 != other.permCustom10) {
+            return false;
+        }
+        if (permCustom11 != other.permCustom11) {
+            return false;
+        }
+        if (permCustom12 != other.permCustom12) {
+            return false;
+        }
+        if (permCustom2 != other.permCustom2) {
+            return false;
+        }
+        if (permCustom3 != other.permCustom3) {
+            return false;
+        }
+        if (permCustom4 != other.permCustom4) {
+            return false;
+        }
+        if (permCustom5 != other.permCustom5) {
+            return false;
+        }
+        if (permCustom6 != other.permCustom6) {
+            return false;
+        }
+        if (permCustom7 != other.permCustom7) {
+            return false;
+        }
+        if (permCustom8 != other.permCustom8) {
+            return false;
+        }
+        if (permCustom9 != other.permCustom9) {
+            return false;
+        }
+        if (permDistribute != other.permDistribute) {
+            return false;
+        }
+        if (permOpen != other.permOpen) {
+            return false;
+        }
+        if (permRead != other.permRead) {
+            return false;
+        }
+        if (permTransfer != other.permTransfer) {
+            return false;
+        }
+        if (workbasketId == null) {
+            if (other.workbasketId != null) {
+                return false;
+            }
+        } else if (!workbasketId.equals(other.workbasketId)) {
+            return false;
+        }
+        return true;
+    }
+
 }
diff --git a/lib/taskana-core/src/main/java/pro/taskana/impl/WorkbasketSummaryImpl.java b/lib/taskana-core/src/main/java/pro/taskana/impl/WorkbasketSummaryImpl.java
index 77fa32508..6ecc1a4bc 100644
--- a/lib/taskana-core/src/main/java/pro/taskana/impl/WorkbasketSummaryImpl.java
+++ b/lib/taskana-core/src/main/java/pro/taskana/impl/WorkbasketSummaryImpl.java
@@ -5,8 +5,6 @@ import pro.taskana.WorkbasketType;
 
 /**
  * This entity contains the most important information about a workbasket.
- *
- * @author bbr
  */
 public class WorkbasketSummaryImpl implements WorkbasketSummary {
 
@@ -23,7 +21,6 @@ public class WorkbasketSummaryImpl implements WorkbasketSummary {
     private String orgLevel4;
 
     WorkbasketSummaryImpl() {
-
     }
 
     /*
@@ -195,7 +192,7 @@ public class WorkbasketSummaryImpl implements WorkbasketSummary {
         if (obj == null) {
             return false;
         }
-        if (!(obj instanceof WorkbasketSummaryImpl)) {
+        if (getClass() != obj.getClass()) {
             return false;
         }
         WorkbasketSummaryImpl other = (WorkbasketSummaryImpl) obj;
diff --git a/lib/taskana-core/src/test/java/acceptance/task/CreateTaskAccTest.java b/lib/taskana-core/src/test/java/acceptance/task/CreateTaskAccTest.java
index 4d33c7b40..5deaf5c26 100644
--- a/lib/taskana-core/src/test/java/acceptance/task/CreateTaskAccTest.java
+++ b/lib/taskana-core/src/test/java/acceptance/task/CreateTaskAccTest.java
@@ -545,4 +545,32 @@ public class CreateTaskAccTest extends AbstractAccTest {
         assertEquals(workbasket.getDomain(), createdTask.getDomain());
     }
 
+    @WithAccessId(
+        userName = "user_1_1",
+        groupNames = {"group_1"})
+    @Test
+    public void testCreatedTaskObjectEqualsReadTaskObject()
+        throws SQLException, NotAuthorizedException, InvalidArgumentException, ClassificationNotFoundException,
+        WorkbasketNotFoundException, TaskAlreadyExistException, InvalidWorkbasketException, TaskNotFoundException {
+
+        TaskService taskService = taskanaEngine.getTaskService();
+        Task newTask = taskService.newTask("USER_1_1", "DOMAIN_A");
+        newTask.setClassificationKey("T2100");
+        newTask.setPrimaryObjRef(createObjectReference("COMPANY_A", "SYSTEM_A", "INSTANCE_A", "VNR", "1234567"));
+        for (int i = 1; i < 16; i++) {
+            newTask.setCustomAttribute(Integer.toString(i), "VALUE " + i);
+        }
+        newTask.setCustomAttributes(createSimpleCustomProperties(5));
+        newTask.setDescription("Description of test task");
+        newTask.setNote("My note");
+        newTask.addAttachment(createAttachment("DOCTYPE_DEFAULT",
+            createObjectReference("COMPANY_A", "SYSTEM_B", "INSTANCE_B", "ArchiveId",
+                "12345678901234567890123456789012345678901234567890"),
+            "E-MAIL", "2018-01-15", createSimpleCustomProperties(3)));
+        Task createdTask = taskService.createTask(newTask);
+        Task readTask = taskService.getTask(createdTask.getId());
+
+        assertEquals(createdTask, readTask);
+    }
+
 }