diff --git a/atst/domain/authz.py b/atst/domain/authz.py
index 4c2db2ed..ab596154 100644
--- a/atst/domain/authz.py
+++ b/atst/domain/authz.py
@@ -33,3 +33,24 @@ class Authorization(object):
     @classmethod
     def is_ccpo(cls, user):
         return user.atat_role.name == "ccpo"
+
+    @classmethod
+    def check_task_order_permission(cls, user, task_order, permission, message):
+        if Authorization._check_is_task_order_officer(task_order, user):
+            return True
+
+        Authorization.check_workspace_permission(
+            user, task_order.workspace, permission, message
+        )
+
+    @classmethod
+    def _check_is_task_order_officer(cls, task_order, user):
+        for officer in [
+            "contracting_officer",
+            "contracting_officer_representative",
+            "security_officer",
+        ]:
+            if getattr(task_order, officer, None) == user:
+                return True
+
+        return False
diff --git a/atst/domain/roles.py b/atst/domain/roles.py
index 5f7e1ebb..469126a8 100644
--- a/atst/domain/roles.py
+++ b/atst/domain/roles.py
@@ -86,6 +86,9 @@ WORKSPACE_ROLES = [
             Permissions.VIEW_ENVIRONMENT_IN_APPLICATION,
             Permissions.RENAME_ENVIRONMENT_IN_APPLICATION,
             Permissions.VIEW_WORKSPACE_AUDIT_LOG,
+            Permissions.VIEW_TASK_ORDER,
+            Permissions.UPDATE_TASK_ORDER,
+            Permissions.ADD_TASK_ORDER_OFFICER,
         ],
     },
     {
@@ -114,6 +117,9 @@ WORKSPACE_ROLES = [
             Permissions.VIEW_ENVIRONMENT_IN_APPLICATION,
             Permissions.RENAME_ENVIRONMENT_IN_APPLICATION,
             Permissions.VIEW_WORKSPACE_AUDIT_LOG,
+            Permissions.VIEW_TASK_ORDER,
+            Permissions.UPDATE_TASK_ORDER,
+            Permissions.ADD_TASK_ORDER_OFFICER,
         ],
     },
     {
diff --git a/atst/domain/task_orders.py b/atst/domain/task_orders.py
index 9acd1107..865b5b05 100644
--- a/atst/domain/task_orders.py
+++ b/atst/domain/task_orders.py
@@ -2,7 +2,9 @@ from sqlalchemy.orm.exc import NoResultFound
 
 from atst.database import db
 from atst.models.task_order import TaskOrder
+from atst.models.permissions import Permissions
 from atst.domain.workspaces import Workspaces
+from atst.domain.authz import Authorization
 from .exceptions import NotFoundError
 
 
@@ -46,27 +48,35 @@ class TaskOrders(object):
     }
 
     @classmethod
-    def get(cls, task_order_id):
+    def get(cls, user, task_order_id):
         try:
             task_order = db.session.query(TaskOrder).filter_by(id=task_order_id).one()
+            Authorization.check_task_order_permission(
+                user, task_order, Permissions.VIEW_TASK_ORDER, "view task order"
+            )
 
             return task_order
         except NoResultFound:
             raise NotFoundError("task_order")
 
     @classmethod
-    def create(cls, workspace, creator, commit=False):
+    def create(cls, creator, workspace):
+        Authorization.check_workspace_permission(
+            creator, workspace, Permissions.UPDATE_TASK_ORDER, "add task order"
+        )
         task_order = TaskOrder(workspace=workspace, creator=creator)
 
         db.session.add(task_order)
-
-        if commit:
-            db.session.commit()
+        db.session.commit()
 
         return task_order
 
     @classmethod
-    def update(cls, task_order, **kwargs):
+    def update(cls, user, task_order, **kwargs):
+        Authorization.check_task_order_permission(
+            user, task_order, Permissions.UPDATE_TASK_ORDER, "update task order"
+        )
+
         for key, value in kwargs.items():
             setattr(task_order, key, value)
 
@@ -103,6 +113,13 @@ class TaskOrders(object):
 
     @classmethod
     def add_officer(cls, user, task_order, officer_type, officer_data):
+        Authorization.check_workspace_permission(
+            user,
+            task_order.workspace,
+            Permissions.ADD_TASK_ORDER_OFFICER,
+            "add task order officer",
+        )
+
         if officer_type in TaskOrders.OFFICERS:
             workspace = task_order.workspace
 
diff --git a/atst/models/permissions.py b/atst/models/permissions.py
index 231d65a2..15d103c5 100644
--- a/atst/models/permissions.py
+++ b/atst/models/permissions.py
@@ -43,3 +43,7 @@ class Permissions(object):
 
     ADD_TAG_TO_WORKSPACE = "add_tag_to_workspace"
     REMOVE_TAG_FROM_WORKSPACE = "remove_tag_from_workspace"
+
+    VIEW_TASK_ORDER = "view_task_order"
+    UPDATE_TASK_ORDER = "update_task_order"
+    ADD_TASK_ORDER_OFFICER = "add_task_order_officers"
diff --git a/atst/routes/task_orders/index.py b/atst/routes/task_orders/index.py
index 97364476..74393e75 100644
--- a/atst/routes/task_orders/index.py
+++ b/atst/routes/task_orders/index.py
@@ -1,5 +1,5 @@
 from io import BytesIO
-from flask import Response
+from flask import g, Response
 
 from . import task_orders_bp
 from atst.domain.task_orders import TaskOrders
@@ -8,7 +8,7 @@ from atst.utils.docx import Docx
 
 @task_orders_bp.route("/task_orders/download_summary/<task_order_id>")
 def download_summary(task_order_id):
-    task_order = TaskOrders.get(task_order_id)
+    task_order = TaskOrders.get(g.current_user, task_order_id)
     byte_str = BytesIO()
     Docx.render(byte_str, data=task_order.to_dictionary())
     filename = "{}.docx".format(task_order.portfolio_name)
diff --git a/atst/routes/task_orders/new.py b/atst/routes/task_orders/new.py
index 08f89690..96c1eb77 100644
--- a/atst/routes/task_orders/new.py
+++ b/atst/routes/task_orders/new.py
@@ -47,7 +47,8 @@ TASK_ORDER_SECTIONS = [
 
 
 class ShowTaskOrderWorkflow:
-    def __init__(self, screen=1, task_order_id=None):
+    def __init__(self, user, screen=1, task_order_id=None):
+        self.user = user
         self.screen = screen
         self.task_order_id = task_order_id
         self._section = TASK_ORDER_SECTIONS[screen - 1]
@@ -57,7 +58,7 @@ class ShowTaskOrderWorkflow:
     @property
     def task_order(self):
         if not self._task_order and self.task_order_id:
-            self._task_order = TaskOrders.get(self.task_order_id)
+            self._task_order = TaskOrders.get(self.user, self.task_order_id)
 
         return self._task_order
 
@@ -122,13 +123,13 @@ class UpdateTaskOrderWorkflow(ShowTaskOrderWorkflow):
 
     def _update_task_order(self):
         if self.task_order:
-            TaskOrders.update(self.task_order, **self.form.data)
+            TaskOrders.update(self.user, self.task_order, **self.form.data)
         else:
             ws = Workspaces.create(self.user, self.form.portfolio_name.data)
             to_data = self.form.data.copy()
             to_data.pop("portfolio_name")
-            self._task_order = TaskOrders.create(workspace=ws, creator=self.user)
-            TaskOrders.update(self.task_order, **to_data)
+            self._task_order = TaskOrders.create(self.user, ws)
+            TaskOrders.update(self.user, self.task_order, **to_data)
 
     OFFICER_INVITATIONS = [
         {
@@ -189,7 +190,7 @@ class UpdateTaskOrderWorkflow(ShowTaskOrderWorkflow):
 @task_orders_bp.route("/task_orders/new/<int:screen>")
 @task_orders_bp.route("/task_orders/new/<int:screen>/<task_order_id>")
 def new(screen, task_order_id=None):
-    workflow = ShowTaskOrderWorkflow(screen, task_order_id)
+    workflow = ShowTaskOrderWorkflow(g.current_user, screen, task_order_id)
     return render_template(
         workflow.template,
         current=screen,
diff --git a/tests/domain/test_task_orders.py b/tests/domain/test_task_orders.py
index 8966d59b..ab485586 100644
--- a/tests/domain/test_task_orders.py
+++ b/tests/domain/test_task_orders.py
@@ -1,8 +1,14 @@
 import pytest
 
 from atst.domain.task_orders import TaskOrders, TaskOrderError
+from atst.domain.exceptions import UnauthorizedError
 
-from tests.factories import TaskOrderFactory, UserFactory
+from tests.factories import (
+    TaskOrderFactory,
+    UserFactory,
+    WorkspaceRoleFactory,
+    WorkspaceFactory,
+)
 
 
 def test_is_section_complete():
@@ -60,3 +66,37 @@ def test_add_officer_who_is_already_workspace_member():
     assert task_order.contracting_officer == owner
     member = task_order.workspace.members[0]
     assert member.user == owner and member.role_name == "owner"
+
+
+def test_task_order_access():
+    creator = UserFactory.create()
+    member = UserFactory.create()
+    rando = UserFactory.create()
+    officer = UserFactory.create()
+
+    def check_access(can, cannot, method_name, method_args):
+        method = getattr(TaskOrders, method_name)
+
+        for user in can:
+            assert method(user, *method_args)
+
+        for user in cannot:
+            with pytest.raises(UnauthorizedError):
+                method(user, *method_args)
+
+    workspace = WorkspaceFactory.create(owner=creator)
+    task_order = TaskOrderFactory.create(creator=creator, workspace=workspace)
+    WorkspaceRoleFactory.create(user=member, workspace=task_order.workspace)
+    TaskOrders.add_officer(
+        creator, task_order, "contracting_officer", officer.to_dictionary()
+    )
+
+    check_access([creator, officer], [member, rando], "get", [task_order.id])
+    check_access([creator], [officer, member, rando], "create", [workspace])
+    check_access([creator, officer], [member, rando], "update", [task_order])
+    check_access(
+        [creator],
+        [officer, member, rando],
+        "add_officer",
+        [task_order, "contracting_officer", rando.to_dictionary()],
+    )
diff --git a/tests/routes/task_orders/test_index.py b/tests/routes/task_orders/test_index.py
index a28981da..f5d81938 100644
--- a/tests/routes/task_orders/test_index.py
+++ b/tests/routes/task_orders/test_index.py
@@ -5,7 +5,7 @@ from zipfile import ZipFile
 
 from atst.utils.docx import Docx
 
-from tests.factories import TaskOrderFactory
+from tests.factories import TaskOrderFactory, WorkspaceFactory, UserFactory
 
 
 def xml_translated(val):
@@ -13,8 +13,10 @@ def xml_translated(val):
 
 
 def test_download_summary(client, user_session):
-    user_session()
-    task_order = TaskOrderFactory.create()
+    user = UserFactory.create()
+    workspace = WorkspaceFactory.create(owner=user)
+    task_order = TaskOrderFactory.create(creator=user, workspace=workspace)
+    user_session(user)
     response = client.get(
         url_for("task_orders.download_summary", task_order_id=task_order.id)
     )
diff --git a/tests/routes/task_orders/test_new_task_order.py b/tests/routes/task_orders/test_new_task_order.py
index a59f1341..2287566f 100644
--- a/tests/routes/task_orders/test_new_task_order.py
+++ b/tests/routes/task_orders/test_new_task_order.py
@@ -92,11 +92,20 @@ def test_task_order_form_shows_errors(client, user_session):
     assert "Not a valid integer" in body
 
 
-def test_show_task_order():
-    workflow = ShowTaskOrderWorkflow()
+@pytest.fixture
+def task_order():
+    user = UserFactory.create()
+    workspace = WorkspaceFactory.create(owner=user)
+
+    return TaskOrderFactory.create(creator=user, workspace=workspace)
+
+
+def test_show_task_order(task_order):
+    workflow = ShowTaskOrderWorkflow(task_order.creator)
     assert workflow.task_order is None
-    task_order = TaskOrderFactory.create()
-    another_workflow = ShowTaskOrderWorkflow(task_order_id=task_order.id)
+    another_workflow = ShowTaskOrderWorkflow(
+        task_order.creator, task_order_id=task_order.id
+    )
     assert another_workflow.task_order == task_order
 
 
@@ -108,19 +117,19 @@ def test_show_task_order_form_list_data():
     assert workflow.form.complexity.data == complexity
 
 
-def test_show_task_order_form():
-    workflow = ShowTaskOrderWorkflow()
+def test_show_task_order_form(task_order):
+    workflow = ShowTaskOrderWorkflow(task_order.creator)
     assert not workflow.form.data["app_migration"]
-    task_order = TaskOrderFactory.create()
-    another_workflow = ShowTaskOrderWorkflow(task_order_id=task_order.id)
+    another_workflow = ShowTaskOrderWorkflow(
+        task_order.creator, task_order_id=task_order.id
+    )
     assert (
         another_workflow.form.data["defense_component"] == task_order.defense_component
     )
 
 
-def test_show_task_order_display_screen():
-    task_order = TaskOrderFactory.create()
-    workflow = ShowTaskOrderWorkflow(task_order_id=task_order.id)
+def test_show_task_order_display_screen(task_order):
+    workflow = ShowTaskOrderWorkflow(task_order.creator, task_order_id=task_order.id)
     screens = workflow.display_screens
     # every form section is complete
     for i in range(2):
@@ -139,22 +148,17 @@ def test_update_task_order_with_no_task_order():
     assert workflow.task_order.scope == to_data["scope"]
 
 
-def test_update_task_order_with_existing_task_order():
-    user = UserFactory.create()
-    task_order = TaskOrderFactory.create()
+def test_update_task_order_with_existing_task_order(task_order):
     to_data = serialize_dates(TaskOrderFactory.dictionary())
     workflow = UpdateTaskOrderWorkflow(
-        to_data, user, screen=2, task_order_id=task_order.id
+        to_data, task_order.creator, screen=2, task_order_id=task_order.id
     )
     assert workflow.task_order.start_date != to_data["start_date"]
     workflow.update()
     assert workflow.task_order.start_date.strftime("%m/%d/%Y") == to_data["start_date"]
 
 
-def test_invite_officers_to_task_order(queue):
-    user = UserFactory.create()
-    workspace = WorkspaceFactory.create(owner=user)
-    task_order = TaskOrderFactory.create(creator=user, workspace=workspace)
+def test_invite_officers_to_task_order(task_order, queue):
     to_data = {
         **TaskOrderFactory.dictionary(),
         "ko_invite": True,
@@ -162,7 +166,7 @@ def test_invite_officers_to_task_order(queue):
         "so_invite": True,
     }
     workflow = UpdateTaskOrderWorkflow(
-        to_data, user, screen=3, task_order_id=task_order.id
+        to_data, task_order.creator, screen=3, task_order_id=task_order.id
     )
     workflow.update()
     workspace = task_order.workspace
@@ -179,10 +183,7 @@ def test_invite_officers_to_task_order(queue):
     assert task_order.security_officer.dod_id == to_data["so_dod_id"]
 
 
-def test_add_officer_but_do_not_invite(queue):
-    user = UserFactory.create()
-    workspace = WorkspaceFactory.create(owner=user)
-    task_order = TaskOrderFactory.create(creator=user, workspace=workspace)
+def test_add_officer_but_do_not_invite(task_order, queue):
     to_data = {
         **TaskOrderFactory.dictionary(),
         "ko_invite": False,
@@ -190,7 +191,7 @@ def test_add_officer_but_do_not_invite(queue):
         "so_invite": False,
     }
     workflow = UpdateTaskOrderWorkflow(
-        to_data, user, screen=3, task_order_id=task_order.id
+        to_data, task_order.creator, screen=3, task_order_id=task_order.id
     )
     workflow.update()
     workspace = task_order.workspace