diff --git a/test/integration-tests/TEST-80-NOTIFYACCESS/TEST-80-NOTIFYACCESS.units/notify-reload-harness.sh b/test/integration-tests/TEST-80-NOTIFYACCESS/TEST-80-NOTIFYACCESS.units/notify-reload-harness.sh
new file mode 100755
index 0000000000..c6a291199d
--- /dev/null
+++ b/test/integration-tests/TEST-80-NOTIFYACCESS/TEST-80-NOTIFYACCESS.units/notify-reload-harness.sh
@@ -0,0 +1,44 @@
+#!/usr/bin/env bash
+# SPDX-License-Identifier: LGPL-2.1-or-later
+set -eux
+set -o pipefail
+
+MODE="${1:-well-behaved}"
+FIFO_IN="${2:-/tmp/reload-test-fifo-in}"
+FIFO_OUT="${3:-/tmp/reload-test-fifo-out}"
+
+handle_signal() {
+    echo "reload" >"$FIFO_OUT"
+    systemd-notify --reloading
+    systemd-notify --ready --status="Reloaded"
+}
+
+case "$MODE" in
+    no-handler)
+        ;;
+    toggle-handler|well-behaved)
+        trap 'handle_signal' HUP
+        ;;
+    *)
+        echo "Unknown mode: $MODE" >&2
+        exit 1
+        ;;
+esac
+
+systemd-notify --ready --status="Started with mode=$MODE"
+
+while read -r cmd < "$FIFO_IN"; do
+    case "$cmd" in
+        remove-handler)
+            trap - HUP
+            echo "handler-removed" >"$FIFO_OUT"
+            ;;
+        exit)
+            break
+            ;;
+        *)
+            echo "Unknown command: $cmd" >&2
+            exit 1
+            ;;
+    esac
+done
diff --git a/test/integration-tests/TEST-80-NOTIFYACCESS/TEST-80-NOTIFYACCESS.units/notify-reload-no-handler.service b/test/integration-tests/TEST-80-NOTIFYACCESS/TEST-80-NOTIFYACCESS.units/notify-reload-no-handler.service
new file mode 100644
index 0000000000..3e0152c332
--- /dev/null
+++ b/test/integration-tests/TEST-80-NOTIFYACCESS/TEST-80-NOTIFYACCESS.units/notify-reload-no-handler.service
@@ -0,0 +1,6 @@
+[Unit]
+Description=Test notify-reload without signal handler
+
+[Service]
+Type=notify-reload
+ExecStart=/usr/lib/systemd/tests/testdata/TEST-80-NOTIFYACCESS.units/notify-reload-harness.sh no-handler /tmp/reload-nohandler-in /tmp/reload-nohandler-out
diff --git a/test/integration-tests/TEST-80-NOTIFYACCESS/TEST-80-NOTIFYACCESS.units/notify-reload-sigstop.service b/test/integration-tests/TEST-80-NOTIFYACCESS/TEST-80-NOTIFYACCESS.units/notify-reload-sigstop.service
new file mode 100644
index 0000000000..83c4314ae0
--- /dev/null
+++ b/test/integration-tests/TEST-80-NOTIFYACCESS/TEST-80-NOTIFYACCESS.units/notify-reload-sigstop.service
@@ -0,0 +1,7 @@
+[Unit]
+Description=Test notify-reload with SIGSTOP
+
+[Service]
+Type=notify-reload
+ReloadSignal=SIGSTOP
+ExecStart=/usr/lib/systemd/tests/testdata/TEST-80-NOTIFYACCESS.units/notify-reload-harness.sh no-handler /tmp/reload-sigstop-in /tmp/reload-sigstop-out
diff --git a/test/integration-tests/TEST-80-NOTIFYACCESS/TEST-80-NOTIFYACCESS.units/notify-reload-toggle-handler.service b/test/integration-tests/TEST-80-NOTIFYACCESS/TEST-80-NOTIFYACCESS.units/notify-reload-toggle-handler.service
new file mode 100644
index 0000000000..3f609c99e1
--- /dev/null
+++ b/test/integration-tests/TEST-80-NOTIFYACCESS/TEST-80-NOTIFYACCESS.units/notify-reload-toggle-handler.service
@@ -0,0 +1,6 @@
+[Unit]
+Description=Test notify-reload with handler that can be removed
+
+[Service]
+Type=notify-reload
+ExecStart=/usr/lib/systemd/tests/testdata/TEST-80-NOTIFYACCESS.units/notify-reload-harness.sh toggle-handler /tmp/reload-toggle-in /tmp/reload-toggle-out
diff --git a/test/integration-tests/TEST-80-NOTIFYACCESS/TEST-80-NOTIFYACCESS.units/notify-reload-well-behaved.service b/test/integration-tests/TEST-80-NOTIFYACCESS/TEST-80-NOTIFYACCESS.units/notify-reload-well-behaved.service
new file mode 100644
index 0000000000..f81e2b8904
--- /dev/null
+++ b/test/integration-tests/TEST-80-NOTIFYACCESS/TEST-80-NOTIFYACCESS.units/notify-reload-well-behaved.service
@@ -0,0 +1,6 @@
+[Unit]
+Description=Test notify-reload with proper signal handler
+
+[Service]
+Type=notify-reload
+ExecStart=/usr/lib/systemd/tests/testdata/TEST-80-NOTIFYACCESS.units/notify-reload-harness.sh well-behaved /tmp/reload-wellbehaved-in /tmp/reload-wellbehaved-out
diff --git a/test/units/TEST-80-NOTIFYACCESS.sh b/test/units/TEST-80-NOTIFYACCESS.sh
index 4439e46362..41e65c37c6 100755
--- a/test/units/TEST-80-NOTIFYACCESS.sh
+++ b/test/units/TEST-80-NOTIFYACCESS.sh
@@ -172,4 +172,85 @@ assert_eq "$(systemctl show fdstore-nopin.service -P NFileDescriptorStore)" 0
 assert_eq "$(systemctl show fdstore-pin.service -P SubState)" dead
 assert_eq "$(systemctl show fdstore-nopin.service -P SubState)" dead
 
+# Test notify-reload signal handler validation
+
+cleanup_notify_reload() {
+    systemctl stop notify-reload-no-handler.service \
+        notify-reload-sigstop.service \
+        notify-reload-toggle-handler.service \
+        notify-reload-well-behaved.service || :
+    systemctl reset-failed notify-reload-no-handler.service \
+        notify-reload-sigstop.service \
+        notify-reload-toggle-handler.service \
+        notify-reload-well-behaved.service || :
+    rm -f /tmp/reload-nohandler-in /tmp/reload-nohandler-out \
+        /tmp/reload-nohandler-cursor \
+        /tmp/reload-sigstop-in /tmp/reload-sigstop-out \
+        /tmp/reload-toggle-in /tmp/reload-toggle-out \
+        /tmp/reload-toggle-cursor \
+        /tmp/reload-wellbehaved-in /tmp/reload-wellbehaved-out
+}
+
+trap cleanup_notify_reload EXIT
+cleanup_notify_reload
+
+# Test 1: Service without signal handler should fail to start
+mkfifo /tmp/reload-nohandler-in /tmp/reload-nohandler-out
+journalctl -q -n 0 --cursor-file=/tmp/reload-nohandler-cursor
+(! systemctl start notify-reload-no-handler.service)
+assert_eq "$(systemctl show notify-reload-no-handler.service -P SubState)" "failed"
+assert_eq "$(systemctl show notify-reload-no-handler.service -P Result)" "protocol"
+# Verify error was logged about missing signal handler
+journalctl --sync
+journalctl -u notify-reload-no-handler.service --cursor-file=/tmp/reload-nohandler-cursor \
+    --grep "lacks handler for reload signal" >/dev/null
+systemctl reset-failed notify-reload-no-handler.service
+rm -f /tmp/reload-nohandler-in /tmp/reload-nohandler-out
+
+# Test 2: SIGSTOP cannot be caught or blocked, so it is exempt from handler validation
+mkfifo /tmp/reload-sigstop-in /tmp/reload-sigstop-out
+systemctl start notify-reload-sigstop.service
+assert_eq "$(systemctl show notify-reload-sigstop.service -P SubState)" "running"
+systemctl stop notify-reload-sigstop.service
+rm -f /tmp/reload-sigstop-in /tmp/reload-sigstop-out
+
+# Test 3: Service that removes handler should warn on reload but still reload
+mkfifo /tmp/reload-toggle-in /tmp/reload-toggle-out
+systemctl start notify-reload-toggle-handler.service
+assert_eq "$(systemctl show notify-reload-toggle-handler.service -P SubState)" "running"
+
+# Command service to remove its signal handler
+timeout 10 bash -c 'echo "remove-handler" >/tmp/reload-toggle-in'
+response="$(timeout 10 cat /tmp/reload-toggle-out)"
+assert_eq "$response" "handler-removed"
+
+# Reload should succeed (with warning) even though handler is gone - service will be killed by SIGHUP
+# but that's intentional after the first start succeeds
+journalctl -q -n 0 --cursor-file=/tmp/reload-toggle-cursor
+systemctl reload --no-block notify-reload-toggle-handler.service
+# The service will die from SIGHUP since the handler is removed
+timeout 10 bash -c 'while systemctl is-active --quiet notify-reload-toggle-handler.service; do sleep .5; done'
+# Verify warning was logged
+journalctl --sync
+journalctl -u notify-reload-toggle-handler.service --cursor-file=/tmp/reload-toggle-cursor \
+    --grep "lacks handler for reload signal" >/dev/null
+rm -f /tmp/reload-toggle-in /tmp/reload-toggle-out
+
+# Test 4: Well-behaved service with handler should work correctly
+mkfifo /tmp/reload-wellbehaved-in /tmp/reload-wellbehaved-out
+systemctl start notify-reload-well-behaved.service
+assert_eq "$(systemctl show notify-reload-well-behaved.service -P SubState)" "running"
+
+# Reload should succeed
+systemctl reload --no-block notify-reload-well-behaved.service
+timeout 10 bash -c 'until [[ $(systemctl show notify-reload-well-behaved.service -P SubState) == "reload-signal" ]]; do sleep .5; done'
+response="$(timeout 10 cat /tmp/reload-wellbehaved-out)"
+assert_eq "$response" "reload"
+timeout 10 bash -c 'until [[ $(systemctl show notify-reload-well-behaved.service -P SubState) == "running" ]]; do sleep .5; done'
+assert_eq "$(systemctl show notify-reload-well-behaved.service -P ReloadResult)" "success"
+
+timeout 10 bash -c 'echo "exit" >/tmp/reload-wellbehaved-in'
+systemctl stop notify-reload-well-behaved.service
+rm -f /tmp/reload-wellbehaved-in /tmp/reload-wellbehaved-out
+
 touch /testok