diff --git a/src/pages/WorkListPage/WorkListPage.test.tsx b/src/pages/WorkListPage/WorkListPage.test.tsx
index 17824a7..a6279a0 100644
--- a/src/pages/WorkListPage/WorkListPage.test.tsx
+++ b/src/pages/WorkListPage/WorkListPage.test.tsx
@@ -2,6 +2,7 @@ import { render, screen } from '@testing-library/react'
 import userEvent from '@testing-library/user-event'
 import { MemoryRouter } from 'react-router-dom'
 import { describe, expect, it } from 'vitest'
+import railStyles from '../../components/ui/WorkItemRow/WorkItemRow.module.css'
 import { WorkListPage } from './WorkListPage'
 import { WORK_ITEMS, WORK_TABS } from './workListData'
 
@@ -103,4 +104,18 @@ describe('WorkListPage', () => {
     expect(screen.getByText('7월 외부기관 제출자료 취합')).toBeInTheDocument()
     expect(screen.queryByText('응웬반A 체류연장 준비')).not.toBeInTheDocument()
   })
+
+  it('colors the rail by urgency tier derived from dueDays', () => {
+    renderPage()
+
+    const urgentItem = WORK_ITEMS.find((item) => item.dueDays <= 7)!
+    const mediumItem = WORK_ITEMS.find((item) => item.dueDays > 7)!
+
+    const urgentRail = screen.getByText(urgentItem.title).closest('button')!.querySelector('[aria-hidden="true"]')
+    const mediumRail = screen.getByText(mediumItem.title).closest('button')!.querySelector('[aria-hidden="true"]')
+
+    expect(urgentRail).toHaveClass(railStyles.railCritical)
+    expect(mediumRail).not.toHaveClass(railStyles.railCritical)
+    expect(mediumRail).not.toHaveClass(railStyles.railNeutral)
+  })
 })
diff --git a/src/pages/WorkListPage/WorkListPage.tsx b/src/pages/WorkListPage/WorkListPage.tsx
index f709849..98a512f 100644
--- a/src/pages/WorkListPage/WorkListPage.tsx
+++ b/src/pages/WorkListPage/WorkListPage.tsx
@@ -2,11 +2,18 @@ import { useMemo, useState } from 'react'
 import { useNavigate } from 'react-router-dom'
 import { Dropdown } from '../../components/ui/Dropdown/Dropdown'
 import { EmptyState } from '../../components/ui/EmptyState/EmptyState'
-import { WorkItemRow } from '../../components/ui/WorkItemRow/WorkItemRow'
+import { WorkItemRow, type WorkItemUrgency } from '../../components/ui/WorkItemRow/WorkItemRow'
 import { useAsyncDemoData } from '../../hooks/useAsyncDemoData'
+import { getUrgencyTier } from '../../utils/urgency'
 import styles from './WorkListPage.module.css'
 import { TOTAL_WORK_COUNT, WORK_ITEMS, WORK_TABS, type WorkTabId } from './workListData'
 
+const URGENCY_TIER_ROW_CLASS: Record<ReturnType<typeof getUrgencyTier>, WorkItemUrgency> = {
+  urgent: 'critical',
+  medium: 'warning',
+  comfortable: 'neutral',
+}
+
 const STATUS_OPTIONS = [
   { value: 'all', label: '상태 · 전체' },
   { value: 'pending', label: '상태 · 승인 대기' },
@@ -148,7 +155,7 @@ export function WorkListPage() {
                   title={item.title}
                   meta={item.meta}
                   nextAction={item.nextAction}
-                  urgency={item.urgency}
+                  urgency={URGENCY_TIER_ROW_CLASS[getUrgencyTier(item.dueDays)]}
                   onClick={() => navigate(`/tasks/${item.id}`)}
                 />
               ))}
diff --git a/src/pages/WorkListPage/workListData.ts b/src/pages/WorkListPage/workListData.ts
index f0bc553..d206206 100644
--- a/src/pages/WorkListPage/workListData.ts
+++ b/src/pages/WorkListPage/workListData.ts
@@ -1,5 +1,3 @@
-import type { WorkItemUrgency } from '../../components/ui/WorkItemRow/WorkItemRow'
-
 // TODO(backend): GET /api/work-items?tab=&status=&due=&q= -> WORK_TABS, WORK_ITEMS 대체
 // 백엔드 연동 전까지는 tabIds/status/dueDays 기준으로 클라이언트에서 직접 필터링한다.
 
@@ -24,7 +22,6 @@ export interface WorkListItem {
   title: string
   meta: string
   nextAction: string
-  urgency: WorkItemUrgency
   tabIds: WorkTabId[]
   status: WorkItemStatus
   dueDays: number
@@ -36,7 +33,6 @@ export const WORK_ITEMS: WorkListItem[] = [
     title: '응웬반A 체류연장 준비',
     meta: 'D-12 · 승인 대기 · 체류 · 김경민',
     nextAction: '다음 · 요청문 승인',
-    urgency: 'warning',
     tabIds: ['mine', 'my-approval'],
     status: 'pending',
     dueDays: 12,
@@ -46,7 +42,6 @@ export const WORK_ITEMS: WorkListItem[] = [
     title: '외국인등록증 사본 제출 요청',
     meta: '오늘 · 근로자 응답 대기 · 서류',
     nextAction: '다음 · 응답 확인',
-    urgency: 'warning',
     tabIds: ['mine'],
     status: 'waiting-response',
     dueDays: 0,
@@ -56,7 +51,6 @@ export const WORK_ITEMS: WorkListItem[] = [
     title: '7월 외부기관 제출자료 취합',
     meta: 'D-2 · 증빙 필요 · 외부기관 · 박서준',
     nextAction: '다음 · 자료 검토',
-    urgency: 'warning',
     tabIds: ['follow-up'],
     status: 'other',
     dueDays: 2,
@@ -66,7 +60,6 @@ export const WORK_ITEMS: WorkListItem[] = [
     title: '신규 입사자 교육 일정 확정',
     meta: 'D-4 · 담당자 미배정 · 일반행정',
     nextAction: '다음 · 담당자 지정',
-    urgency: 'warning',
     tabIds: ['follow-up'],
     status: 'other',
     dueDays: 4,
@@ -76,7 +69,6 @@ export const WORK_ITEMS: WorkListItem[] = [
     title: '월간 기숙사 점검 결과 정리',
     meta: 'D-7 · 준비 중 · 연결 근로자 없음',
     nextAction: '다음 · 체크리스트',
-    urgency: 'warning',
     tabIds: ['follow-up'],
     status: 'other',
     dueDays: 7,
diff --git a/src/pages/WorkerListPage/WorkerListPage.module.css b/src/pages/WorkerListPage/WorkerListPage.module.css
index c5e6c6c..09446df 100644
--- a/src/pages/WorkerListPage/WorkerListPage.module.css
+++ b/src/pages/WorkerListPage/WorkerListPage.module.css
@@ -109,11 +109,18 @@
 .workerDeadline {
   font-size: 13px;
   font-weight: 500;
+}
+
+.workerDeadlineUrgent {
+  color: var(--status-critical);
+}
+
+.workerDeadlineMedium {
   color: var(--status-warning);
 }
 
-.workerDeadlineNormal {
-  color: var(--text-secondary);
+.workerDeadlineComfortable {
+  color: var(--fowoco-green-600);
 }
 
 .workerMeta {
diff --git a/src/pages/WorkerListPage/WorkerListPage.test.tsx b/src/pages/WorkerListPage/WorkerListPage.test.tsx
index 73b66e7..48a702e 100644
--- a/src/pages/WorkerListPage/WorkerListPage.test.tsx
+++ b/src/pages/WorkerListPage/WorkerListPage.test.tsx
@@ -3,6 +3,7 @@ import userEvent from '@testing-library/user-event'
 import { MemoryRouter, Route, Routes } from 'react-router-dom'
 import { describe, expect, it } from 'vitest'
 import { WorkerListPage } from './WorkerListPage'
+import styles from './WorkerListPage.module.css'
 import { WORKERS } from './workerListData'
 
 function renderPage(demoState = 'success', initialPath = `/workers?demoState=${demoState}`) {
@@ -101,4 +102,16 @@ describe('WorkerListPage', () => {
     expect(screen.getByText('솜차이E')).toBeInTheDocument()
     expect(screen.queryByText('아흐메드D')).not.toBeInTheDocument()
   })
+
+  it('colors the deadline text by urgency tier', () => {
+    renderPage()
+
+    const mediumWorker = WORKERS[1]
+    const comfortableWorker = WORKERS.find((worker) => worker.deadlineDays === null)!
+
+    expect(screen.getByText(mediumWorker.deadlineLabel)).toHaveClass(styles.workerDeadlineMedium)
+    expect(screen.getByText(comfortableWorker.deadlineLabel)).toHaveClass(
+      styles.workerDeadlineComfortable,
+    )
+  })
 })
diff --git a/src/pages/WorkerListPage/WorkerListPage.tsx b/src/pages/WorkerListPage/WorkerListPage.tsx
index fe02487..f0632dd 100644
--- a/src/pages/WorkerListPage/WorkerListPage.tsx
+++ b/src/pages/WorkerListPage/WorkerListPage.tsx
@@ -4,6 +4,7 @@ import { Dropdown } from '../../components/ui/Dropdown/Dropdown'
 import { EmptyState } from '../../components/ui/EmptyState/EmptyState'
 import { StatusLabel } from '../../components/ui/StatusLabel/StatusLabel'
 import { useAsyncDemoData } from '../../hooks/useAsyncDemoData'
+import { getUrgencyTier, URGENCY_TONE } from '../../utils/urgency'
 import styles from './WorkerListPage.module.css'
 import { TOTAL_WORKER_COUNT, WORKERS } from './workerListData'
 
@@ -12,6 +13,12 @@ const TASK_LINK_CLASS = {
   primary: styles.taskLinkPrimary,
 }
 
+const DEADLINE_TIER_CLASS = {
+  urgent: styles.workerDeadlineUrgent,
+  medium: styles.workerDeadlineMedium,
+  comfortable: styles.workerDeadlineComfortable,
+}
+
 const DEADLINE_OPTIONS = [
   { value: '30', label: '기한 · 30일' },
   { value: '60', label: '기한 · 60일' },
@@ -41,6 +48,7 @@ export function WorkerListPage() {
   }, [query, deadlineFilter])
 
   const selectedWorker = WORKERS.find((worker) => worker.id === workerId) ?? WORKERS[0]
+  const selectedDeadlineTier = getUrgencyTier(selectedWorker.deadlineDays)
 
   function handleViewAllWorkers() {
     // TODO(backend): GET /api/workers?page= -> 전체 근로자 페이지네이션
@@ -130,7 +138,7 @@ export function WorkerListPage() {
                     <p className={styles.workerName}>{worker.name}</p>
                     <span
                       className={`${styles.workerDeadline} ${
-                        worker.deadlineHighlighted ? '' : styles.workerDeadlineNormal
+                        DEADLINE_TIER_CLASS[getUrgencyTier(worker.deadlineDays)]
                       }`}
                     >
                       {worker.deadlineLabel}
@@ -152,8 +160,10 @@ export function WorkerListPage() {
           <div className={styles.detailPanel}>
             <div className={styles.detailHeader}>
               <h2 className={styles.detailName}>{selectedWorker.name}</h2>
-              {selectedWorker.deadlineHighlighted && (
-                <StatusLabel tone="warning">{selectedWorker.deadlineLabel}</StatusLabel>
+              {selectedDeadlineTier !== 'comfortable' && (
+                <StatusLabel tone={URGENCY_TONE[selectedDeadlineTier]}>
+                  {selectedWorker.deadlineLabel}
+                </StatusLabel>
               )}
             </div>
             <p className={styles.detailMeta}>
diff --git a/src/pages/WorkerListPage/workerListData.ts b/src/pages/WorkerListPage/workerListData.ts
index 5165f6b..8ad3fad 100644
--- a/src/pages/WorkerListPage/workerListData.ts
+++ b/src/pages/WorkerListPage/workerListData.ts
@@ -22,7 +22,6 @@ export interface Worker {
   employeeId: string
   phone: string
   deadlineLabel: string
-  deadlineHighlighted: boolean
   /** null이면 임박한 기한이 없어 기한 필터 값과 무관하게 항상 표시한다. */
   deadlineDays: number | null
   note: string
@@ -39,7 +38,6 @@ export const WORKERS: Worker[] = [
     employeeId: 'F-021',
     phone: '010-****-3182',
     deadlineLabel: 'D-12 체류',
-    deadlineHighlighted: true,
     deadlineDays: 12,
     note: '진행 업무 2건',
     currentTasks: [
@@ -61,7 +59,6 @@ export const WORKERS: Worker[] = [
     employeeId: 'F-018',
     phone: '010-****-2091',
     deadlineLabel: 'D-21 서류',
-    deadlineHighlighted: true,
     deadlineDays: 21,
     note: '서류 누락 1건',
     currentTasks: [{ title: '외국인등록증 사본 제출 요청', detail: '오늘 · 근로자 응답 대기', linkTone: 'warning' }],
@@ -75,7 +72,6 @@ export const WORKERS: Worker[] = [
     employeeId: 'F-032',
     phone: '010-****-7745',
     deadlineLabel: 'D-35 체류',
-    deadlineHighlighted: true,
     deadlineDays: 35,
     note: '응답 대기 1건',
     currentTasks: [{ title: '체류연장 안내 응답 대기', detail: '오늘 · 근로자 응답 대기', linkTone: 'warning' }],
@@ -89,7 +85,6 @@ export const WORKERS: Worker[] = [
     employeeId: 'F-014',
     phone: '010-****-5510',
     deadlineLabel: 'D-62 체류',
-    deadlineHighlighted: true,
     deadlineDays: 62,
     note: '진행 업무 없음',
     currentTasks: [],
@@ -103,7 +98,6 @@ export const WORKERS: Worker[] = [
     employeeId: 'F-027',
     phone: '010-****-6623',
     deadlineLabel: '정상',
-    deadlineHighlighted: false,
     deadlineDays: null,
     note: '교육 일정 1건',
     currentTasks: [{ title: '신규 교육 일정 확정', detail: 'D-4 · 담당자 미배정', linkTone: 'warning' }],
diff --git a/src/utils/urgency.test.ts b/src/utils/urgency.test.ts
new file mode 100644
index 0000000..f1dc620
--- /dev/null
+++ b/src/utils/urgency.test.ts
@@ -0,0 +1,32 @@
+import { describe, expect, it } from 'vitest'
+import { getUrgencyTier, URGENCY_LABEL, URGENCY_TONE } from './urgency'
+
+describe('getUrgencyTier', () => {
+  it('returns urgent within 7 days', () => {
+    expect(getUrgencyTier(0)).toBe('urgent')
+    expect(getUrgencyTier(7)).toBe('urgent')
+  })
+
+  it('returns medium between 8 and 30 days', () => {
+    expect(getUrgencyTier(8)).toBe('medium')
+    expect(getUrgencyTier(30)).toBe('medium')
+  })
+
+  it('returns comfortable beyond 30 days', () => {
+    expect(getUrgencyTier(31)).toBe('comfortable')
+    expect(getUrgencyTier(90)).toBe('comfortable')
+  })
+
+  it('treats null as comfortable (no imminent deadline)', () => {
+    expect(getUrgencyTier(null)).toBe('comfortable')
+  })
+})
+
+describe('URGENCY_TONE / URGENCY_LABEL', () => {
+  it('maps every tier to a tone and a Korean label', () => {
+    for (const tier of ['urgent', 'medium', 'comfortable'] as const) {
+      expect(URGENCY_TONE[tier]).toBeDefined()
+      expect(URGENCY_LABEL[tier]).toBeDefined()
+    }
+  })
+})
diff --git a/src/utils/urgency.ts b/src/utils/urgency.ts
new file mode 100644
index 0000000..0ea9f6c
--- /dev/null
+++ b/src/utils/urgency.ts
@@ -0,0 +1,26 @@
+import type { StatusTone } from '../components/ui/StatusLabel/StatusLabel'
+
+export type UrgencyTier = 'urgent' | 'medium' | 'comfortable'
+
+const URGENT_WITHIN_DAYS = 7
+const MEDIUM_WITHIN_DAYS = 30
+
+/** null은 임박한 기한이 없다는 뜻이라 항상 '여유'로 취급한다. */
+export function getUrgencyTier(daysUntilDue: number | null): UrgencyTier {
+  if (daysUntilDue === null) return 'comfortable'
+  if (daysUntilDue <= URGENT_WITHIN_DAYS) return 'urgent'
+  if (daysUntilDue <= MEDIUM_WITHIN_DAYS) return 'medium'
+  return 'comfortable'
+}
+
+export const URGENCY_TONE: Record<UrgencyTier, StatusTone> = {
+  urgent: 'critical',
+  medium: 'warning',
+  comfortable: 'success',
+}
+
+export const URGENCY_LABEL: Record<UrgencyTier, string> = {
+  urgent: '긴급',
+  medium: '중간',
+  comfortable: '여유',
+}