diff --git a/.chronus/changes/add-missing-encode-duration-tests-2026-3-9-4-45-0.md b/.chronus/changes/add-missing-encode-duration-tests-2026-3-9-4-45-0.md
new file mode 100644
index 00000000000..abb8c451acf
--- /dev/null
+++ b/.chronus/changes/add-missing-encode-duration-tests-2026-3-9-4-45-0.md
@@ -0,0 +1,7 @@
+---
+changeKind: internal
+packages:
+  - "@typespec/http-client-java"
+---
+
+Add missing tests for `int32SecondsLargerUnit` and `floatSecondsLargerUnit` encode/duration scenarios (query, header, and property).
diff --git a/packages/http-client-java/generator/http-client-generator-test/src/test/java/encode/duration/EncodeDurationTests.java b/packages/http-client-java/generator/http-client-generator-test/src/test/java/encode/duration/EncodeDurationTests.java
index 04ab3573d8d..6d0e403a449 100644
--- a/packages/http-client-java/generator/http-client-generator-test/src/test/java/encode/duration/EncodeDurationTests.java
+++ b/packages/http-client-java/generator/http-client-generator-test/src/test/java/encode/duration/EncodeDurationTests.java
@@ -11,10 +11,12 @@
 import encode.duration.property.models.FloatMillisecondsLargerUnitDurationProperty;
 import encode.duration.property.models.FloatSecondsDurationArrayProperty;
 import encode.duration.property.models.FloatSecondsDurationProperty;
+import encode.duration.property.models.FloatSecondsLargerUnitDurationProperty;
 import encode.duration.property.models.ISO8601DurationProperty;
 import encode.duration.property.models.Int32MillisecondsDurationProperty;
 import encode.duration.property.models.Int32MillisecondsLargerUnitDurationProperty;
 import encode.duration.property.models.Int32SecondsDurationProperty;
+import encode.duration.property.models.Int32SecondsLargerUnitDurationProperty;
 import java.time.Duration;
 import java.util.Arrays;
 import java.util.List;
@@ -43,6 +45,10 @@ public void testQuery() {
 
         queryClient.int32Seconds(SECOND36);
 
+        queryClient.int32SecondsLargerUnit(Duration.ofMinutes(2));
+
+        queryClient.floatSecondsLargerUnit(Duration.ofMinutes(2).plusSeconds(30));
+
         queryClient.iso8601(DAY40);
 
         queryClient.int32SecondsArray(Arrays.asList(SECOND36, Duration.ofSeconds(47)));
@@ -71,6 +77,10 @@ public void testHeader() {
 
         headerClient.int32Seconds(SECOND36);
 
+        headerClient.int32SecondsLargerUnit(Duration.ofMinutes(2));
+
+        headerClient.floatSecondsLargerUnit(Duration.ofMinutes(2).plusSeconds(30));
+
         headerClient.iso8601(DAY40);
 
         headerClient.iso8601Array(Arrays.asList(DAY40, Duration.ofDays(50)));
@@ -102,6 +112,16 @@ public void testProperty() {
         Assertions.assertEquals(SECOND36,
             propertyClient.int32Seconds(new Int32SecondsDurationProperty(SECOND36)).getValue());
 
+        Assertions.assertEquals(Duration.ofMinutes(2),
+            propertyClient.int32SecondsLargerUnit(new Int32SecondsLargerUnitDurationProperty(Duration.ofMinutes(2)))
+                .getValue());
+
+        Assertions.assertEquals(Duration.ofMinutes(2).plusSeconds(30),
+            propertyClient
+                .floatSecondsLargerUnit(
+                    new FloatSecondsLargerUnitDurationProperty(Duration.ofMinutes(2).plusSeconds(30)))
+                .getValue());
+
         propertyClient.iso8601(new ISO8601DurationProperty(DAY40));
 
         List<Duration> array = Arrays.asList(SECOND35, Duration.ofSeconds(46, 750_000_000));