diff --git a/.ci/scripts/calculate_jobs.py b/.ci/scripts/calculate_jobs.py
index c2198e0dd49b..c8741e68489b 100755
--- a/.ci/scripts/calculate_jobs.py
+++ b/.ci/scripts/calculate_jobs.py
@@ -133,3 +133,73 @@ def set_output(key: str, value: str):
 
 test_matrix = json.dumps(sytest_tests)
 set_output("sytest_test_matrix", test_matrix)
+
+
+# Calculate a comprehensive list of workers by type to hunt for specific problems with them.
+# Won't need to include if it's a 'worker' setup, because obviously it is. Postgres is implied
+# because it's necessary for worker at this time.
+
+complement_single_worker_tests = [
+    {
+        "worker_types": workers,
+    }
+    for workers in (
+        "account_data",
+        "appservice",
+        "background_worker",
+        "event_creator",
+        "event_persister",
+        "federation_inbound",
+        "federation_reader",
+        "federation_sender",
+        "frontend_proxy",
+        "media_repository",
+        "presence",
+        "pusher",
+        "receipts",
+        "synchrotron",
+        "to_device",
+        "typing",
+        "user_dir",
+    )
+]
+
+complement_sharding_worker_tests = [
+    {"worker_types": "event_persister, event_persister, event_persister"},
+    {"worker_types": "federation_sender, federation_sender, federation_sender"},
+    {"worker_types": "pusher, pusher, pusher"},
+    {"worker_types": "synchrotron, synchrotron, synchrotron"},
+]
+
+complement_stream_writers_worker_tests = [
+    {
+        "worker_types": "account_data, event_persister, presence, receipts, to_device, typing"
+    }
+]
+
+complement_fullset_worker_tests = [
+    {
+        "worker_types": "account_data, appservice, background_worker, event_creator, event_persister, event_persister, federation_inbound, federation_reader, federation_sender, federation_sender, frontend_proxy, media_repository, pusher, pusher, synchrotron, to_device, typing, user_dir"
+    }
+]
+
+print("::group::Calculated Complement jobs")
+print(
+    json.dumps(
+        complement_single_worker_tests
+        + complement_sharding_worker_tests
+        + complement_stream_writers_worker_tests
+        + complement_fullset_worker_tests,
+        indent=4,
+    )
+)
+print("::endgroup::")
+
+test_matrix = json.dumps(complement_single_worker_tests)
+set_output("complement_singles_test_matrix", test_matrix)
+test_matrix = json.dumps(complement_sharding_worker_tests)
+set_output("complement_sharding_test_matrix", test_matrix)
+test_matrix = json.dumps(complement_stream_writers_worker_tests)
+set_output("complement_stream_writers_test_matrix", test_matrix)
+test_matrix = json.dumps(complement_fullset_worker_tests)
+set_output("complement_fullset_test_matrix", test_matrix)
diff --git a/.github/workflows/complement.yml b/.github/workflows/complement.yml
new file mode 100644
index 000000000000..722c568636d4
--- /dev/null
+++ b/.github/workflows/complement.yml
@@ -0,0 +1,161 @@
+name: Complement Tests
+
+on:
+#  push:
+#    branches: ["develop", "release-*"]
+#  pull_request:
+#  schedule:
+# eg. runs everyday at 4am    - 0 4 * * *
+# eg. runs every sundat at 4am  - 0 4 * * 0
+
+# Note: this will only work if this test exists on default branch, which is 'develop'
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  calculate-test-jobs:
+    name: "Calculate Test Jobs"
+    if: ${{ !cancelled() && !failure() }} # Allow previous steps to be skipped, but not fail
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+      - id: get-matrix
+        run: .ci/scripts/calculate_jobs.py
+    outputs:
+      complement_singles_test_matrix: ${{ steps.get-matrix.outputs.complement_singles_test_matrix }}
+      complement_sharding_test_matrix: ${{ steps.get-matrix.outputs.complement_sharding_test_matrix }}
+      complement_stream_writers_test_matrix: ${{ steps.get-matrix.outputs.complement_stream_writers_test_matrix }}
+
+  singles:
+    name: Singles
+    if: "${{ !failure() && !cancelled() }}"
+    needs: calculate-test-jobs
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        job: ${{ fromJson(needs.calculate-test-jobs.outputs.complement_singles_test_matrix) }}
+
+    steps:
+      - name: Run actions/checkout@v3 for synapse
+        uses: actions/checkout@v3
+        with:
+          path: synapse
+
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+            toolchain: 1.58.1
+            override: true
+      - uses: Swatinem/rust-cache@v2
+
+      - name: Prepare Complement's Prerequisites
+        run: synapse/.ci/scripts/setup_complement_prerequisites.sh
+
+      - name: Run Complement Tests
+        shell: bash
+        env:
+          POSTGRES: "true"
+          WORKERS: "true"
+          SYNAPSE_WORKER_TYPES: ${{ matrix.job.worker_types }}
+        run: |
+          set -o pipefail
+          COMPLEMENT_DIR=`pwd`/complement synapse/scripts-dev/complement.sh -json 2>&1 | synapse/.ci/scripts/gotestfmt
+
+
+  sharding:
+    name: Sharding
+    if: "${{ !failure() && !cancelled() }}"
+    needs: calculate-test-jobs
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        job: ${{ fromJson(needs.calculate-test-jobs.outputs.complement_sharding_test_matrix) }}
+
+    steps:
+      - name: Run actions/checkout@v3 for synapse
+        uses: actions/checkout@v3
+        with:
+          path: synapse
+
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+            toolchain: 1.58.1
+            override: true
+      - uses: Swatinem/rust-cache@v2
+
+      - name: Prepare Complement's Prerequisites
+        run: synapse/.ci/scripts/setup_complement_prerequisites.sh
+
+      - name: Run Complement Tests
+        shell: bash
+        env:
+          POSTGRES: "true"
+          WORKERS: "true"
+          SYNAPSE_WORKER_TYPES: ${{ matrix.job.worker_types }}
+        run: |
+          set -o pipefail
+          COMPLEMENT_DIR=`pwd`/complement synapse/scripts-dev/complement.sh -json 2>&1 | synapse/.ci/scripts/gotestfmt
+
+
+  stream_writers:
+    name: All Stream Writers
+    if: "${{ !failure() && !cancelled() }}"
+    needs: calculate-test-jobs
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        job: ${{ fromJson(needs.calculate-test-jobs.outputs.complement_stream_writers_test_matrix) }}
+
+    steps:
+      - name: Run actions/checkout@v3 for synapse
+        uses: actions/checkout@v3
+        with:
+          path: synapse
+
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+            toolchain: 1.58.1
+            override: true
+      - uses: Swatinem/rust-cache@v2
+
+      - name: Prepare Complement's Prerequisites
+        run: synapse/.ci/scripts/setup_complement_prerequisites.sh
+
+      - name: Run Complement Tests
+        shell: bash
+        env:
+          POSTGRES: "true"
+          WORKERS: "true"
+          SYNAPSE_WORKER_TYPES: ${{ matrix.job.worker_types }}
+        run: |
+          set -o pipefail
+          COMPLEMENT_DIR=`pwd`/complement synapse/scripts-dev/complement.sh -json 2>&1 | synapse/.ci/scripts/gotestfmt
+
+
+  # a job which marks all the other jobs as complete, thus allowing PRs to be merged.
+  tests-done:
+    name: Tests Done
+    if: ${{ always() }}
+    needs:
+      - singles
+      - sharding
+      - stream_writers
+    runs-on: ubuntu-latest
+    steps:
+      - uses: matrix-org/done-action@v2
+        with:
+          needs: ${{ toJSON(needs) }}
+
+          # skippable:
diff --git a/changelog.d/14197.docker b/changelog.d/14197.docker
new file mode 100644
index 000000000000..529ccd99c501
--- /dev/null
+++ b/changelog.d/14197.docker
@@ -0,0 +1 @@
+Add all Stream Writer worker types to configure_workers_and_start.py.
diff --git a/changelog.d/14202.misc b/changelog.d/14202.misc
new file mode 100644
index 000000000000..c010f7bab81d
--- /dev/null
+++ b/changelog.d/14202.misc
@@ -0,0 +1 @@
+Extend Complement testing to include various worker type combinations.
diff --git a/docker/configure_workers_and_start.py b/docker/configure_workers_and_start.py
index 1ea456b2f88e..8f981399b309 100755
--- a/docker/configure_workers_and_start.py
+++ b/docker/configure_workers_and_start.py
@@ -50,7 +50,13 @@
 
 MAIN_PROCESS_HTTP_LISTENER_PORT = 8080
 
-
+# Workers with exposed endpoints needs either "client", "federation", or "media" listener_resources
+# Watching /_matrix/client needs a "client" listener
+# Watching /_matrix/federation needs a "federation" listener
+# Watching /_matrix/media and related needs a "media" listener
+# Stream Writers require "client" and "replication" listeners because they
+#   have to attach by instance_map to the master process and have client endpoints.
+# BIG WARNING: typing and receipts stream writers are not working correctly at this time.
 WORKERS_CONFIG: Dict[str, Dict[str, Any]] = {
     "pusher": {
         "app": "synapse.app.pusher",
@@ -209,6 +215,49 @@
             % (MAIN_PROCESS_HTTP_LISTENER_PORT,)
         ),
     },
+    "account_data": {
+        "app": "synapse.app.generic_worker",
+        "listener_resources": ["client", "replication"],
+        "endpoint_patterns": [
+            "^/_matrix/client/(r0|v3|unstable)/.*/tags",
+            "^/_matrix/client/(r0|v3|unstable)/.*/account_data",
+        ],
+        "shared_extra_conf": {},
+        "worker_extra_conf": "",
+    },
+    "presence": {
+        "app": "synapse.app.generic_worker",
+        "listener_resources": ["client", "replication"],
+        "endpoint_patterns": ["^/_matrix/client/(api/v1|r0|v3|unstable)/presence/"],
+        "shared_extra_conf": {},
+        "worker_extra_conf": "",
+    },
+    "receipts": {
+        "app": "synapse.app.generic_worker",
+        "listener_resources": ["client", "replication"],
+        "endpoint_patterns": [
+            "^/_matrix/client/(r0|v3|unstable)/rooms/.*/receipt",
+            "^/_matrix/client/(r0|v3|unstable)/rooms/.*/read_markers",
+        ],
+        "shared_extra_conf": {},
+        "worker_extra_conf": "",
+    },
+    "to_device": {
+        "app": "synapse.app.generic_worker",
+        "listener_resources": ["client", "replication"],
+        "endpoint_patterns": ["^/_matrix/client/(r0|v3|unstable)/sendToDevice/"],
+        "shared_extra_conf": {},
+        "worker_extra_conf": "",
+    },
+    "typing": {
+        "app": "synapse.app.generic_worker",
+        "listener_resources": ["client", "replication"],
+        "endpoint_patterns": [
+            "^/_matrix/client/(api/v1|r0|v3|unstable)/rooms/.*/typing"
+        ],
+        "shared_extra_conf": {},
+        "worker_extra_conf": "",
+    },
 }
 
 # Templates for sections that may be inserted multiple times in config files
@@ -309,6 +358,20 @@ def add_sharding_to_shared_config(
             "port": worker_port,
         }
 
+    elif worker_type in ["account_data", "presence", "receipts", "to_device", "typing"]:
+        # Update the list of stream writers
+        # It's convienent that the name of the worker type is the same as the event stream
+        shared_config.setdefault("stream_writers", {}).setdefault(
+            worker_type, []
+        ).append(worker_name)
+
+        # Map of stream writer instance names to host/ports combos
+        # For now, all stream writers need http replication ports
+        instance_map[worker_name] = {
+            "host": "localhost",
+            "port": worker_port,
+        }
+
     elif worker_type == "media_repository":
         # The first configured media worker will run the media background jobs
         shared_config.setdefault("media_instance_running_background_jobs", worker_name)
@@ -441,11 +504,11 @@ def generate_worker_files(
 
         # Check if more than one instance of this worker type has been specified
         worker_type_total_count = worker_types.count(worker_type)
-        if worker_type_total_count > 1:
-            # Update the shared config with sharding-related options if necessary
-            add_sharding_to_shared_config(
-                shared_config, worker_type, worker_name, worker_port
-            )
+
+        # Update the shared config with sharding-related options if necessary
+        add_sharding_to_shared_config(
+            shared_config, worker_type, worker_name, worker_port
+        )
 
         # Enable the worker in supervisord
         worker_descriptors.append(worker_config)