diff --git a/test/built-ins/Temporal/PlainTime/get-prototype-from-constructor-throws.js b/test/built-ins/Temporal/PlainTime/get-prototype-from-constructor-throws.js
new file mode 100644
index 0000000000..d4579b7dcc
--- /dev/null
+++ b/test/built-ins/Temporal/PlainTime/get-prototype-from-constructor-throws.js
@@ -0,0 +1,39 @@
+// Copyright (C) 2024 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.plaintime
+description: >
+  OrdinaryCreateFromConstructor returns with an abrupt completion.
+info: |
+  CreateTemporalTime ( time [ , newTarget ] )
+
+  ...
+  2. Let object be ? OrdinaryCreateFromConstructor(newTarget,
+     "%Temporal.PlainTime.prototype%", « [[InitializedTemporalTime]], [[Time]] »).
+  ...
+
+  OrdinaryCreateFromConstructor ( constructor, intrinsicDefaultProto [ , internalSlotsList ] )
+
+  ...
+  2. Let proto be ? GetPrototypeFromConstructor(constructor, intrinsicDefaultProto).
+  ...
+
+  GetPrototypeFromConstructor ( constructor, intrinsicDefaultProto )
+
+  ...
+  2. Let proto be ? Get(constructor, "prototype").
+  ...
+
+features: [Temporal]
+---*/
+
+var newTarget = Object.defineProperty(function(){}.bind(), "prototype", {
+  get() {
+    throw new Test262Error();
+  }
+});
+
+assert.throws(Test262Error, function() {
+  Reflect.construct(Temporal.PlainTime, [], newTarget)
+});
diff --git a/test/built-ins/Temporal/PlainTime/prototype/with/throws-if-time-is-invalid-when-overflow-is-reject.js b/test/built-ins/Temporal/PlainTime/prototype/with/throws-if-time-is-invalid-when-overflow-is-reject.js
new file mode 100644
index 0000000000..477dfb598c
--- /dev/null
+++ b/test/built-ins/Temporal/PlainTime/prototype/with/throws-if-time-is-invalid-when-overflow-is-reject.js
@@ -0,0 +1,51 @@
+// Copyright (C) 2024 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.plaintime.prototype.with
+description: >
+  Throws if overflow is "reject" and any value is outside the valid bounds.
+info: |
+  Temporal.PlainTime.prototype.with ( temporalTimeLike [ , options ] )
+
+  ...
+  19. Let result be ? RegulateTime(hour, minute, second, millisecond, microsecond, nanosecond, overflow).
+  ...
+
+  RegulateTime ( hour, minute, second, millisecond, microsecond, nanosecond, overflow )
+
+  ...
+  2. Else,
+    a. Assert: overflow is reject.
+    b. If IsValidTime(hour, minute, second, millisecond, microsecond, nanosecond) is false, throw a RangeError exception.
+  ...
+
+features: [Temporal]
+---*/
+
+var instance = new Temporal.PlainTime();
+
+var temporalTimeLikes = [
+  {hour: -1},
+  {hour: 24},
+  {minute: -1},
+  {minute: 60},
+  {second: -1},
+  {second: 60},
+  {millisecond: -1},
+  {millisecond: 1000},
+  {microsecond: -1},
+  {microsecond: 1000},
+  {nanosecond: -1},
+  {nanosecond: 1000},
+];
+
+var options = {overflow: "reject"};
+
+for (var temporalTimeLike of temporalTimeLikes) {
+  assert.throws(
+    RangeError,
+    () => instance.with(temporalTimeLike, options),
+    `temporalTimeLike = ${JSON.stringify(temporalTimeLike)}`
+  );
+}
diff --git a/test/built-ins/Temporal/PlainTime/throws-if-time-is-invalid.js b/test/built-ins/Temporal/PlainTime/throws-if-time-is-invalid.js
new file mode 100644
index 0000000000..43e569dfc0
--- /dev/null
+++ b/test/built-ins/Temporal/PlainTime/throws-if-time-is-invalid.js
@@ -0,0 +1,39 @@
+// Copyright (C) 2024 André Bargull. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-temporal.plaintime
+description: >
+  Throws if any value is outside the valid bounds.
+info: |
+  Temporal.PlainTime ( [ hour [ , minute [ , second [ , millisecond [ , microsecond [ , nanosecond ] ] ] ] ] ] )
+
+  ...
+  8. If IsValidTime(hour, minute, second, millisecond, microsecond, nanosecond) is false, throw a RangeError exception.
+  ...
+
+features: [Temporal]
+---*/
+
+var invalidArgs = [
+  [-1],
+  [24],
+  [0, -1],
+  [0, 60],
+  [0, 0, -1],
+  [0, 0, 60],
+  [0, 0, 0, -1],
+  [0, 0, 0, 1000],
+  [0, 0, 0, 0, -1],
+  [0, 0, 0, 0, 1000],
+  [0, 0, 0, 0, 0, -1],
+  [0, 0, 0, 0, 0, 1000],
+];
+
+for (var args of invalidArgs) {
+  assert.throws(
+    RangeError,
+    () => new Temporal.PlainTime(...args),
+    `args = ${JSON.stringify(args)}`
+  );
+}