diff --git a/src/main/java/com/fowoco/server/casework/application/CaseDisplayFacts.java b/src/main/java/com/fowoco/server/casework/application/CaseDisplayFacts.java
new file mode 100644
index 0000000..6f983b6
--- /dev/null
+++ b/src/main/java/com/fowoco/server/casework/application/CaseDisplayFacts.java
@@ -0,0 +1,17 @@
+package com.fowoco.server.casework.application;
+
+/**
+ * Case 표시 상태를 계산할 때 사용하는 조회 사실입니다.
+ *
+ * @param completed Case 업무가 모두 완료됐는지 여부
+ * @param linkIssued 근로자용 요청 링크를 발급했는지 여부
+ * @param reviewRequired 도착한 답변이나 서류에 HR 검토가 남아 있는지 여부
+ * @param unreadResponse 도착했지만 아직 읽지 않은 근로자 응답이 있는지 여부
+ */
+public record CaseDisplayFacts(
+        boolean completed,
+        boolean linkIssued,
+        boolean reviewRequired,
+        boolean unreadResponse
+) {
+}
diff --git a/src/main/java/com/fowoco/server/casework/application/CaseDisplayState.java b/src/main/java/com/fowoco/server/casework/application/CaseDisplayState.java
new file mode 100644
index 0000000..58cd802
--- /dev/null
+++ b/src/main/java/com/fowoco/server/casework/application/CaseDisplayState.java
@@ -0,0 +1,16 @@
+package com.fowoco.server.casework.application;
+
+import com.fowoco.server.casework.domain.CaseDisplayStatus;
+import java.util.Objects;
+
+/**
+ * 업무함 API에 반환할 Case 표시 상태와 새 응답 표시입니다.
+ */
+public record CaseDisplayState(
+        CaseDisplayStatus status,
+        boolean hasUnreadResponse
+) {
+    public CaseDisplayState {
+        Objects.requireNonNull(status, "status must not be null");
+    }
+}
diff --git a/src/main/java/com/fowoco/server/casework/application/CaseDisplayStatusResolver.java b/src/main/java/com/fowoco/server/casework/application/CaseDisplayStatusResolver.java
new file mode 100644
index 0000000..139d418
--- /dev/null
+++ b/src/main/java/com/fowoco/server/casework/application/CaseDisplayStatusResolver.java
@@ -0,0 +1,28 @@
+package com.fowoco.server.casework.application;
+
+import com.fowoco.server.casework.domain.CaseDisplayStatus;
+import java.util.Objects;
+
+/**
+ * 여러 모듈의 상태를 변경하지 않고 업무함 표시 상태만 계산합니다.
+ */
+public final class CaseDisplayStatusResolver {
+
+    public CaseDisplayState resolve(CaseDisplayFacts facts) {
+        Objects.requireNonNull(facts, "facts must not be null");
+
+        if (facts.completed()) {
+            return new CaseDisplayState(CaseDisplayStatus.COMPLETED, false);
+        }
+        if (facts.reviewRequired() || facts.unreadResponse()) {
+            return new CaseDisplayState(
+                    CaseDisplayStatus.REVIEW_REQUIRED,
+                    facts.unreadResponse()
+            );
+        }
+        if (facts.linkIssued()) {
+            return new CaseDisplayState(CaseDisplayStatus.REQUEST_SENT, false);
+        }
+        return new CaseDisplayState(CaseDisplayStatus.DOCUMENT_PENDING, false);
+    }
+}
diff --git a/src/main/java/com/fowoco/server/casework/domain/CaseDisplayStatus.java b/src/main/java/com/fowoco/server/casework/domain/CaseDisplayStatus.java
new file mode 100644
index 0000000..e0328e2
--- /dev/null
+++ b/src/main/java/com/fowoco/server/casework/domain/CaseDisplayStatus.java
@@ -0,0 +1,14 @@
+package com.fowoco.server.casework.domain;
+
+/**
+ * 업무함에서 사용자에게 보여 주는 Case 요약 상태입니다.
+ *
+ * <p>Task의 업무 처리 상태와 Worker Link의 전달 상태를 바꾸지 않고,
+ * 조회 시점의 사실을 조합해 화면에 표시할 값만 나타냅니다.</p>
+ */
+public enum CaseDisplayStatus {
+    DOCUMENT_PENDING,
+    REQUEST_SENT,
+    REVIEW_REQUIRED,
+    COMPLETED
+}
diff --git a/src/main/java/com/fowoco/server/casework/package-info.java b/src/main/java/com/fowoco/server/casework/package-info.java
new file mode 100644
index 0000000..5a7e0f6
--- /dev/null
+++ b/src/main/java/com/fowoco/server/casework/package-info.java
@@ -0,0 +1,4 @@
+/**
+ * Case grouping, workflow snapshots, and work-inbox projections.
+ */
+package com.fowoco.server.casework;
diff --git a/src/test/java/com/fowoco/server/casework/application/CaseDisplayStatusResolverTest.java b/src/test/java/com/fowoco/server/casework/application/CaseDisplayStatusResolverTest.java
new file mode 100644
index 0000000..c7e576f
--- /dev/null
+++ b/src/test/java/com/fowoco/server/casework/application/CaseDisplayStatusResolverTest.java
@@ -0,0 +1,68 @@
+package com.fowoco.server.casework.application;
+
+import static com.fowoco.server.casework.domain.CaseDisplayStatus.COMPLETED;
+import static com.fowoco.server.casework.domain.CaseDisplayStatus.DOCUMENT_PENDING;
+import static com.fowoco.server.casework.domain.CaseDisplayStatus.REQUEST_SENT;
+import static com.fowoco.server.casework.domain.CaseDisplayStatus.REVIEW_REQUIRED;
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.jupiter.api.Test;
+
+class CaseDisplayStatusResolverTest {
+
+    private final CaseDisplayStatusResolver resolver = new CaseDisplayStatusResolver();
+
+    @Test
+    void showsDocumentPendingBeforeWorkerLinkIsIssued() {
+        CaseDisplayState result = resolver.resolve(facts(false, false, false, false));
+
+        assertThat(result.status()).isEqualTo(DOCUMENT_PENDING);
+        assertThat(result.hasUnreadResponse()).isFalse();
+    }
+
+    @Test
+    void showsRequestSentAfterWorkerLinkIsIssuedWithoutResponse() {
+        CaseDisplayState result = resolver.resolve(facts(false, true, false, false));
+
+        assertThat(result.status()).isEqualTo(REQUEST_SENT);
+        assertThat(result.hasUnreadResponse()).isFalse();
+    }
+
+    @Test
+    void keepsReviewRequiredAfterResponseIsReadUntilHrDecision() {
+        CaseDisplayState result = resolver.resolve(facts(false, true, true, false));
+
+        assertThat(result.status()).isEqualTo(REVIEW_REQUIRED);
+        assertThat(result.hasUnreadResponse()).isFalse();
+    }
+
+    @Test
+    void showsReviewRequiredAndUnreadBadgeForNewWorkerResponse() {
+        CaseDisplayState result = resolver.resolve(facts(false, true, false, true));
+
+        assertThat(result.status()).isEqualTo(REVIEW_REQUIRED);
+        assertThat(result.hasUnreadResponse()).isTrue();
+    }
+
+    @Test
+    void completedTakesPriorityAndClearsUnreadBadge() {
+        CaseDisplayState result = resolver.resolve(facts(true, true, true, true));
+
+        assertThat(result.status()).isEqualTo(COMPLETED);
+        assertThat(result.hasUnreadResponse()).isFalse();
+    }
+
+    private CaseDisplayFacts facts(
+            boolean completed,
+            boolean linkIssued,
+            boolean reviewRequired,
+            boolean unreadResponse
+    ) {
+        return new CaseDisplayFacts(
+                completed,
+                linkIssued,
+                reviewRequired,
+                unreadResponse
+        );
+    }
+}