diff --git a/common/src/main/java/com/ntropy/common/dto/work/summary/CalendarWorkBrief.java b/common/src/main/java/com/ntropy/common/dto/work/summary/CalendarWorkBrief.java
index 178c7348..8c79b721 100644
--- a/common/src/main/java/com/ntropy/common/dto/work/summary/CalendarWorkBrief.java
+++ b/common/src/main/java/com/ntropy/common/dto/work/summary/CalendarWorkBrief.java
@@ -17,4 +17,6 @@ public class CalendarWorkBrief {
     private LocalTime startTime;
     private LocalTime endTime;
     private String status;
+    private Long taskCount;
+    private Long fatigue;
 }
diff --git a/services/work-service/src/main/java/com/ntropy/work/exception/WorkErrorCode.java b/services/work-service/src/main/java/com/ntropy/work/exception/WorkErrorCode.java
index cb5a970d..53d99f21 100644
--- a/services/work-service/src/main/java/com/ntropy/work/exception/WorkErrorCode.java
+++ b/services/work-service/src/main/java/com/ntropy/work/exception/WorkErrorCode.java
@@ -30,6 +30,7 @@ public enum WorkErrorCode implements ServiceErrorCode {
     WORK_LOG_ACCESS_DENIED(403, "본인 소유가 아닌 근무일지입니다."),
     INVALID_WORK_TIME_RANGE(400, "시작 시간과 종료 시간이 같을 수 없습니다."),
     WORK_LOG_ALREADY_CONFIRMED(409, "이미 확정된 근무일지입니다."),
+    WORK_LOG_SETTLEMENT_IN_PROGRESS(409, "정산이 진행 중이거나 완료된 근무일지는 수정할 수 없습니다."),
 
     CATEGORY_NOT_FOUND(404, "존재하지 않는 카테고리입니다."),
     PLATFORM_NOT_FOUND(404, "존재하지 않는 플랫폼입니다."),
diff --git a/services/work-service/src/main/java/com/ntropy/work/service/CalendarService.java b/services/work-service/src/main/java/com/ntropy/work/service/CalendarService.java
index 29ceaf07..f50fd4b4 100644
--- a/services/work-service/src/main/java/com/ntropy/work/service/CalendarService.java
+++ b/services/work-service/src/main/java/com/ntropy/work/service/CalendarService.java
@@ -111,7 +111,7 @@ public CalendarDailySummary getDailySummary(Long userId, LocalDate date, Double
 
         List<CalendarWorkBrief> works = workLogs.stream()
                 .map(w -> new CalendarWorkBrief(w.getLogId(), w.getJobId(), jobNames.get(w.getJobId()),
-                        w.getStartTime(), w.getEndTime(), w.getStatus()))
+                        w.getStartTime(), w.getEndTime(), w.getStatus(), w.getTaskCount(), w.getFatigue()))
                 .collect(Collectors.toList());
 
         String dayOfWeek = KOREAN_DAY_OF_WEEK.get(date.getDayOfWeek());
diff --git a/services/work-service/src/main/java/com/ntropy/work/service/WorkLogService.java b/services/work-service/src/main/java/com/ntropy/work/service/WorkLogService.java
index 4727f4d2..0bfbb2b3 100644
--- a/services/work-service/src/main/java/com/ntropy/work/service/WorkLogService.java
+++ b/services/work-service/src/main/java/com/ntropy/work/service/WorkLogService.java
@@ -89,8 +89,11 @@ public WorkLog registerActual(WorkLog workLog) {
     }
 
     /**
-     * 근무일지 수정. PLANNED 상태에서만 가능하다. 확정(CONFIRMED) 이후에는
-     * WORK_LOG_PLATFORM_INCOME과의 정합성이 깨질 수 있어 수정할 수 없고, 삭제만 가능하다.
+     * 근무일지 수정. PLANNED 상태는 항상 가능하다. CONFIRMED 상태는 아직 어느 플랫폼도
+     * 정산되지 않은 경우(settlementStatus == PENDING)에 한해 허용한다 - 하나라도
+     * 실제 입금과 매칭(PARTIAL/COMPLETED)된 이후에는 그 기록을 보존해야 하므로 여전히
+     * 수정할 수 없고 삭제만 가능하다. CONFIRMED 상태를 수정하면 소득이 바뀔 수 있어
+     * WORK_LOG_PLATFORM_INCOME을 지우고 다시 배분한다.
      * 넘어온 필드만 덮어쓰고 나머지는 기존 값을 유지한다.
      *
      * @param requesterUserId 요청자 userId. 근무일지 소유자와 다르면 예외
@@ -99,18 +102,30 @@ public WorkLog registerActual(WorkLog workLog) {
     public WorkLog editWorkLog(Long requesterUserId, Long logId, WorkLog patch) {
         WorkLog existing = findById(logId);
         verifyOwnership(requesterUserId, existing.getUserId(), logId);
-        if (STATUS_CONFIRMED.equals(existing.getStatus())) {
-            throw new ServiceException(WorkErrorCode.WORK_LOG_ALREADY_CONFIRMED, "logId=" + logId);
+        boolean wasConfirmed = STATUS_CONFIRMED.equals(existing.getStatus());
+        if (wasConfirmed && existing.getSettlementStatus() != SettlementStatus.PENDING) {
+            throw new ServiceException(WorkErrorCode.WORK_LOG_SETTLEMENT_IN_PROGRESS, "logId=" + logId);
         }
         applyPatch(existing, patch);
         validateNoOverlap(existing.getUserId(), existing.getWorkDate(), existing.getStartTime(), existing.getEndTime(),
                 existing.getLogId());
 
         Job job = jobService.findById(existing.getJobId());
+        if (wasConfirmed) {
+            validateTaskCountIfPerTask(job, existing.getTaskCount());
+        }
         existing.setEstimatedIncome(
                 calculateEstimatedIncome(job, existing.getStartTime(), existing.getEndTime(), existing.getTaskCount()));
 
-        workLogMapper.update(existing);
+        if (wasConfirmed) {
+            workLogPlatformIncomeMapper.deleteByLogId(existing.getLogId());
+            List<WorkLogPlatformIncome> incomes = resolvePlatformIncomes(job.getJobId(), existing.getEstimatedIncome());
+            existing.setSettlementStatus(WorkLogSettlementStatusCalculator.calculate(incomes));
+            workLogMapper.update(existing);
+            saveIncomes(existing.getLogId(), incomes);
+        } else {
+            workLogMapper.update(existing);
+        }
         return existing;
     }
 
diff --git a/services/work-service/src/test/java/com/ntropy/work/service/CalendarServiceTest.java b/services/work-service/src/test/java/com/ntropy/work/service/CalendarServiceTest.java
index 5aa59de9..e6903161 100644
--- a/services/work-service/src/test/java/com/ntropy/work/service/CalendarServiceTest.java
+++ b/services/work-service/src/test/java/com/ntropy/work/service/CalendarServiceTest.java
@@ -255,14 +255,17 @@ void monthlySummary_savingGoalForOtherMonth_targetAmountIsNull() {
     @DisplayName("일간 요약은 근무 목록과 요일 한글 표기를 채운다")
     void dailySummary_returnsWorksAndKoreanDayOfWeek() {
         LocalDate monday = LocalDate.of(2026, 8, 3);
-        seedWorkLog(JOB_A, monday, LocalTime.of(18, 0), LocalTime.of(22, 0),
+        WorkLog log = seedWorkLog(JOB_A, monday, LocalTime.of(18, 0), LocalTime.of(22, 0),
                 "PLANNED", SettlementStatus.NONE, 48000L);
+        log.setFatigue(3L);
+        workLogMapper.update(log);
 
         CalendarDailySummary summary = calendarService.getDailySummary(USER_ID, monday, null, null);
 
         assertEquals("월", summary.getDayOfWeek());
         assertEquals(1, summary.getWorks().size());
         assertEquals("배민 배달", summary.getWorks().get(0).getJobName());
+        assertEquals(3L, summary.getWorks().get(0).getFatigue());
     }
 
     @Test
diff --git a/services/work-service/src/test/java/com/ntropy/work/service/WorkLogServiceTest.java b/services/work-service/src/test/java/com/ntropy/work/service/WorkLogServiceTest.java
index 957904f4..61c1bc44 100644
--- a/services/work-service/src/test/java/com/ntropy/work/service/WorkLogServiceTest.java
+++ b/services/work-service/src/test/java/com/ntropy/work/service/WorkLogServiceTest.java
@@ -377,10 +377,10 @@ void editWorkLog_notOwner_throws() {
     }
 
     @Test
-    @DisplayName("확정된 근무일지는 수정할 수 없다")
-    void editWorkLog_confirmed_throws() {
-        Job job = hourlyJob();
-        WorkLog plan = workLogService.registerPlan(planOf(job.getJobId(), LocalTime.of(18, 0), LocalTime.of(22, 0)));
+    @DisplayName("정산이 진행된(COMPLETED) 확정 근무일지는 수정할 수 없다")
+    void editWorkLog_settlementCompleted_throws() {
+        Job job = onDemandJob(); // ON_DEMAND 플랫폼이라 확정 즉시 COMPLETED
+        WorkLog plan = workLogService.registerPlan(planOf(job.getJobId(), LocalTime.of(20, 0), LocalTime.of(22, 0)));
         workLogService.confirmWorkLog(USER_ID, plan.getLogId(), WorkLog.builder().build());
 
         WorkLog patch = WorkLog.builder().endTime(LocalTime.of(23, 0)).build();
@@ -388,6 +388,39 @@ void editWorkLog_confirmed_throws() {
         assertThrows(ServiceException.class, () -> workLogService.editWorkLog(USER_ID, plan.getLogId(), patch));
     }
 
+    @Test
+    @DisplayName("확정됐지만 아직 정산이 시작되지 않은(PENDING) 근무일지는 수정할 수 있다")
+    void editWorkLog_confirmedButPending_isAllowed() {
+        Job job = hourlyJob(); // 플랫폼 매핑이 없어 확정해도 PENDING 유지
+        WorkLog plan = workLogService.registerPlan(planOf(job.getJobId(), LocalTime.of(18, 0), LocalTime.of(22, 0)));
+        workLogService.confirmWorkLog(USER_ID, plan.getLogId(), WorkLog.builder().build());
+
+        WorkLog patch = WorkLog.builder().endTime(LocalTime.of(23, 0)).build();
+        WorkLog result = workLogService.editWorkLog(USER_ID, plan.getLogId(), patch);
+
+        assertEquals("CONFIRMED", result.getStatus());
+        assertEquals(LocalTime.of(23, 0), result.getEndTime());
+        assertEquals(60000L, result.getEstimatedIncome());
+    }
+
+    @Test
+    @DisplayName("자동정산 플랫폼 잡을 확정 후(PENDING) 수정하면 income 행이 새 소득 기준으로 재생성된다")
+    void editWorkLog_autoPlatformPending_regeneratesIncomeRows() {
+        Job job = multiPlatformJob(); // AUTO 트리거 플랫폼 2개 매핑, 확정해도 PENDING 유지
+        WorkLog plan = workLogService.registerPlan(planOf(job.getJobId(), LocalTime.of(18, 0), LocalTime.of(22, 0)));
+        WorkLog confirmed = workLogService.confirmWorkLog(USER_ID, plan.getLogId(), WorkLog.builder().build());
+        assertEquals(SettlementStatus.PENDING, confirmed.getSettlementStatus());
+
+        WorkLog patch = WorkLog.builder().endTime(LocalTime.of(23, 0)).build(); // 4시간 -> 5시간, 40000 -> 50000
+        WorkLog result = workLogService.editWorkLog(USER_ID, plan.getLogId(), patch);
+
+        assertEquals(50000L, result.getEstimatedIncome());
+        List<WorkLogPlatformIncome> incomes = workLogPlatformIncomeMapper.findByLogId(result.getLogId());
+        assertEquals(2, incomes.size());
+        long total = incomes.stream().mapToLong(WorkLogPlatformIncome::getExpectedAmount).sum();
+        assertEquals(50000L, total);
+    }
+
     @Test
     @DisplayName("확정하면 PLANNED에서 CONFIRMED로 전환된다")
     void confirmWorkLog_transitionsPlannedToConfirmed() {