diff --git a/src/main/java/com/dreamteam/alter/domain/email/entity/EmailSendLog.java b/src/main/java/com/dreamteam/alter/domain/email/entity/EmailSendLog.java
index 84f36aab..d62f0f4d 100644
--- a/src/main/java/com/dreamteam/alter/domain/email/entity/EmailSendLog.java
+++ b/src/main/java/com/dreamteam/alter/domain/email/entity/EmailSendLog.java
@@ -30,7 +30,7 @@ public class EmailSendLog {
     private String email;
 
     @Enumerated(EnumType.STRING)
-    @Column(name = "status", nullable = false)
+    @Column(name = "status", length = 20, nullable = false)
     private EmailSendStatus status;
 
     @CreatedDate
diff --git a/src/main/java/com/dreamteam/alter/domain/file/entity/File.java b/src/main/java/com/dreamteam/alter/domain/file/entity/File.java
index b13c1dec..88556236 100644
--- a/src/main/java/com/dreamteam/alter/domain/file/entity/File.java
+++ b/src/main/java/com/dreamteam/alter/domain/file/entity/File.java
@@ -26,37 +26,37 @@
 public class File {
 
     @Id
-    @Column(name = "id", nullable = false, unique = true)
+    @Column(name = "id", length = 36, nullable = false, unique = true)
     private String id;
 
     @Enumerated(EnumType.STRING)
-    @Column(name = "target_type", nullable = false)
+    @Column(name = "target_type", length = 40, nullable = false)
     private FileTargetType targetType;
 
-    @Column(name = "target_id")
+    @Column(name = "target_id", length = 36)
     private String targetId;
 
     @Column(name = "original_file_name", nullable = false)
     private String originalFileName;
 
-    @Column(name = "stored_key", nullable = false, unique = true)
+    @Column(name = "stored_key", length = 512, nullable = false, unique = true)
     private String storedKey;
 
-    @Column(name = "file_url")
+    @Column(name = "file_url", length = 1024)
     private String fileUrl;
 
-    @Column(name = "content_type", nullable = false)
+    @Column(name = "content_type", length = 100, nullable = false)
     private String contentType;
 
     @Column(name = "file_size", nullable = false)
     private Long fileSize;
 
     @Enumerated(EnumType.STRING)
-    @Column(name = "bucket_type", nullable = false)
+    @Column(name = "bucket_type", length = 10, nullable = false)
     private BucketType bucketType;
 
     @Enumerated(EnumType.STRING)
-    @Column(nullable = false)
+    @Column(nullable = false, length = 10)
     private FileStatus status;
 
     @Column(name = "uploaded_by", nullable = false)
diff --git a/src/main/java/com/dreamteam/alter/domain/notification/entity/Notification.java b/src/main/java/com/dreamteam/alter/domain/notification/entity/Notification.java
index f4051329..a6764968 100644
--- a/src/main/java/com/dreamteam/alter/domain/notification/entity/Notification.java
+++ b/src/main/java/com/dreamteam/alter/domain/notification/entity/Notification.java
@@ -30,7 +30,7 @@ public class Notification {
     private User targetUser;
 
     @Enumerated(EnumType.STRING)
-    @Column(name = "scope", nullable = false)
+    @Column(name = "scope", length = 20, nullable = false)
     private TokenScope scope;
 
     @Enumerated(EnumType.STRING)
diff --git a/src/main/java/com/dreamteam/alter/domain/posting/entity/PostingApplication.java b/src/main/java/com/dreamteam/alter/domain/posting/entity/PostingApplication.java
index 4b3dc7ae..b4ae062a 100644
--- a/src/main/java/com/dreamteam/alter/domain/posting/entity/PostingApplication.java
+++ b/src/main/java/com/dreamteam/alter/domain/posting/entity/PostingApplication.java
@@ -41,7 +41,7 @@ public class PostingApplication {
 
     @Enumerated(EnumType.STRING)
     @SQLRestriction("status != 'DELETED'")
-    @Column(name = "status", nullable = false)
+    @Column(name = "status", length = 50, nullable = false)
     private PostingApplicationStatus status;
 
     @CreatedDate
diff --git a/src/main/java/com/dreamteam/alter/domain/reputation/entity/Reputation.java b/src/main/java/com/dreamteam/alter/domain/reputation/entity/Reputation.java
index 99b34500..b78a2c34 100644
--- a/src/main/java/com/dreamteam/alter/domain/reputation/entity/Reputation.java
+++ b/src/main/java/com/dreamteam/alter/domain/reputation/entity/Reputation.java
@@ -34,14 +34,14 @@ public class Reputation {
     @ManyToOne(fetch = FetchType.LAZY)
     private ReputationRequest reputationRequest;
 
-    @Column(name = "writer_type", nullable = false)
+    @Column(name = "writer_type", length = 20, nullable = false)
     @Enumerated(EnumType.STRING)
     private ReputationType writerType;
 
     @Column(name = "writer_id", nullable = false)
     private Long writerId;
 
-    @Column(name = "target_type", nullable = false)
+    @Column(name = "target_type", length = 20, nullable = false)
     @Enumerated(EnumType.STRING)
     private ReputationType targetType;
 
diff --git a/src/main/java/com/dreamteam/alter/domain/reputation/entity/ReputationKeywordMap.java b/src/main/java/com/dreamteam/alter/domain/reputation/entity/ReputationKeywordMap.java
index 2dace70e..a5abb874 100644
--- a/src/main/java/com/dreamteam/alter/domain/reputation/entity/ReputationKeywordMap.java
+++ b/src/main/java/com/dreamteam/alter/domain/reputation/entity/ReputationKeywordMap.java
@@ -38,7 +38,7 @@ public class ReputationKeywordMap {
     @ManyToOne(fetch = FetchType.LAZY, optional = false)
     private ReputationKeyword keyword;
 
-    @Column(name = "description")
+    @Column(name = "description", length = 128)
     private String description;
 
     @CreatedDate
diff --git a/src/main/java/com/dreamteam/alter/domain/reputation/entity/ReputationRequest.java b/src/main/java/com/dreamteam/alter/domain/reputation/entity/ReputationRequest.java
index dfdff29d..d0f24503 100644
--- a/src/main/java/com/dreamteam/alter/domain/reputation/entity/ReputationRequest.java
+++ b/src/main/java/com/dreamteam/alter/domain/reputation/entity/ReputationRequest.java
@@ -34,7 +34,7 @@ public class ReputationRequest {
     private Workspace workspace;
 
     @Enumerated(EnumType.STRING)
-    @Column(name = "request_type", length = 20, nullable = false)
+    @Column(name = "request_type", length = 24, nullable = false)
     private ReputationRequestType requestType;
 
     @Column(name = "requester_type", length = 20, nullable = false)
diff --git a/src/main/java/com/dreamteam/alter/domain/reputation/entity/ReputationSummary.java b/src/main/java/com/dreamteam/alter/domain/reputation/entity/ReputationSummary.java
index bba66fb4..536ccf2b 100644
--- a/src/main/java/com/dreamteam/alter/domain/reputation/entity/ReputationSummary.java
+++ b/src/main/java/com/dreamteam/alter/domain/reputation/entity/ReputationSummary.java
@@ -38,7 +38,7 @@ public class ReputationSummary {
     private Long id;
 
     @Enumerated(EnumType.STRING)
-    @Column(name = COLUMN_TARGET_TYPE, nullable = false)
+    @Column(name = COLUMN_TARGET_TYPE, length = 20, nullable = false)
     private ReputationType targetType;
 
     @Column(name = COLUMN_TARGET_ID, nullable = false)
@@ -51,7 +51,7 @@ public class ReputationSummary {
     @Column(name = COLUMN_TOP_KEYWORDS, columnDefinition = "jsonb")
     private List<KeywordSummaryDto> topKeywords;
 
-    @Column(name = COLUMN_SUMMARY_DESCRIPTION)
+    @Column(name = COLUMN_SUMMARY_DESCRIPTION, length = 500)
     private String summaryDescription;
 
     @CreatedDate
diff --git a/src/main/java/com/dreamteam/alter/domain/user/entity/ManagerUser.java b/src/main/java/com/dreamteam/alter/domain/user/entity/ManagerUser.java
index 221608ac..0b0d1db5 100644
--- a/src/main/java/com/dreamteam/alter/domain/user/entity/ManagerUser.java
+++ b/src/main/java/com/dreamteam/alter/domain/user/entity/ManagerUser.java
@@ -31,7 +31,7 @@ public class ManagerUser {
     private User user;
 
     @Enumerated(EnumType.STRING)
-    @Column(name = "status", nullable = false)
+    @Column(name = "status", length = 50, nullable = false)
     private ManagerUserStatus status;
 
     @CreatedDate
diff --git a/src/main/java/com/dreamteam/alter/domain/user/entity/User.java b/src/main/java/com/dreamteam/alter/domain/user/entity/User.java
index f622a3f9..a8e3e47c 100644
--- a/src/main/java/com/dreamteam/alter/domain/user/entity/User.java
+++ b/src/main/java/com/dreamteam/alter/domain/user/entity/User.java
@@ -35,24 +35,25 @@ public class User {
     @Column(name = "password", length = 255, nullable = true)
     private String password;
 
-    @Column(name = "name", length = 12, nullable = false)
+    @Column(name = "name", length = 30, nullable = false)
     private String name;
 
     @Column(name = "nickname", length = 64, nullable = false, unique = true)
     private String nickname;
 
-    @Column(name = "contact", length = 13, nullable = false)
+    // length 30: withdraw() 익명화 값(id + "_탈퇴") 수용 (전화번호 자체는 11자)
+    @Column(name = "contact", length = 30, nullable = false)
     private String contact;
 
     @Column(name = "birthday", length = 8, nullable = false)
     private String birthday;
 
     @Enumerated(EnumType.STRING)
-    @Column(name = "gender", nullable = false)
+    @Column(name = "gender", length = 20, nullable = false)
     private UserGender gender;
 
     @Enumerated(EnumType.STRING)
-    @Column(name = "role", nullable = false)
+    @Column(name = "role", length = 20, nullable = false)
     private UserRole role;
 
     @Enumerated(EnumType.STRING)
diff --git a/src/main/java/com/dreamteam/alter/domain/user/entity/UserCertificate.java b/src/main/java/com/dreamteam/alter/domain/user/entity/UserCertificate.java
index 92b6c3b8..2c5f3c2e 100644
--- a/src/main/java/com/dreamteam/alter/domain/user/entity/UserCertificate.java
+++ b/src/main/java/com/dreamteam/alter/domain/user/entity/UserCertificate.java
@@ -33,7 +33,7 @@ public class UserCertificate {
     private User user;
 
     @Enumerated(EnumType.STRING)
-    @Column(name = "type", nullable = false)
+    @Column(name = "type", length = 24, nullable = false)
     private CertificateType type;
 
     @Column(name = "certificate_name", length = 255, nullable = false)
diff --git a/src/main/java/com/dreamteam/alter/domain/workspace/entity/BusinessInvitation.java b/src/main/java/com/dreamteam/alter/domain/workspace/entity/BusinessInvitation.java
index eb8312fb..c9ea9610 100644
--- a/src/main/java/com/dreamteam/alter/domain/workspace/entity/BusinessInvitation.java
+++ b/src/main/java/com/dreamteam/alter/domain/workspace/entity/BusinessInvitation.java
@@ -39,7 +39,7 @@ public class BusinessInvitation {
     private ManagerUser invitedBy;
 
     @Enumerated(EnumType.STRING)
-    @Column(name = "status", nullable = false)
+    @Column(name = "status", length = 20, nullable = false)
     private BusinessInvitationStatus status;
 
     @Column(name = "expires_at", nullable = false)
diff --git a/src/main/java/com/dreamteam/alter/domain/workspace/entity/BusinessJoinRequest.java b/src/main/java/com/dreamteam/alter/domain/workspace/entity/BusinessJoinRequest.java
index baec2441..d6e935bf 100644
--- a/src/main/java/com/dreamteam/alter/domain/workspace/entity/BusinessJoinRequest.java
+++ b/src/main/java/com/dreamteam/alter/domain/workspace/entity/BusinessJoinRequest.java
@@ -34,7 +34,7 @@ public class BusinessJoinRequest {
     private User user;
 
     @Enumerated(EnumType.STRING)
-    @Column(name = "status", nullable = false)
+    @Column(name = "status", length = 20, nullable = false)
     private BusinessJoinRequestStatus status;
 
     @CreatedDate
diff --git a/src/main/java/com/dreamteam/alter/domain/workspace/entity/SubstituteRequest.java b/src/main/java/com/dreamteam/alter/domain/workspace/entity/SubstituteRequest.java
index c39a5eb9..885af871 100644
--- a/src/main/java/com/dreamteam/alter/domain/workspace/entity/SubstituteRequest.java
+++ b/src/main/java/com/dreamteam/alter/domain/workspace/entity/SubstituteRequest.java
@@ -39,7 +39,7 @@ public class SubstituteRequest {
     private Long requesterId;
 
     @Enumerated(EnumType.STRING)
-    @Column(name = "request_type", nullable = false)
+    @Column(name = "request_type", length = 20, nullable = false)
     private SubstituteRequestType requestType;
 
     @OneToMany(mappedBy = "substituteRequest", cascade = CascadeType.ALL, fetch = FetchType.LAZY)
@@ -52,16 +52,16 @@ public class SubstituteRequest {
     private Long approverId;
 
     @Enumerated(EnumType.STRING)
-    @Column(name = "status", nullable = false)
+    @Column(name = "status", length = 20, nullable = false)
     private SubstituteRequestStatus status;
 
-    @Column(name = "request_reason")
+    @Column(name = "request_reason", length = 500)
     private String requestReason;
 
-    @Column(name = "approver_rejection_reason")
+    @Column(name = "approver_rejection_reason", length = 500)
     private String approverRejectionReason;
 
-    @Column(name = "approval_comment")
+    @Column(name = "approval_comment", length = 500)
     private String approvalComment;
 
     @Column(name = "accepted_at")
diff --git a/src/main/java/com/dreamteam/alter/domain/workspace/entity/SubstituteRequestTarget.java b/src/main/java/com/dreamteam/alter/domain/workspace/entity/SubstituteRequestTarget.java
index 764f8f3f..13b4ed24 100644
--- a/src/main/java/com/dreamteam/alter/domain/workspace/entity/SubstituteRequestTarget.java
+++ b/src/main/java/com/dreamteam/alter/domain/workspace/entity/SubstituteRequestTarget.java
@@ -30,10 +30,10 @@ public class SubstituteRequestTarget {
     private Long targetWorkerId;
 
     @Enumerated(EnumType.STRING)
-    @Column(name = "status", nullable = false)
+    @Column(name = "status", length = 20, nullable = false)
     private SubstituteRequestTargetStatus status;
 
-    @Column(name = "rejection_reason")
+    @Column(name = "rejection_reason", length = 500)
     private String rejectionReason;
 
     @Column(name = "responded_at")
diff --git a/src/main/java/com/dreamteam/alter/domain/workspace/entity/Workspace.java b/src/main/java/com/dreamteam/alter/domain/workspace/entity/Workspace.java
index cf05264c..fbf10a2d 100644
--- a/src/main/java/com/dreamteam/alter/domain/workspace/entity/Workspace.java
+++ b/src/main/java/com/dreamteam/alter/domain/workspace/entity/Workspace.java
@@ -39,7 +39,7 @@ public class Workspace {
     @Column(name = "business_type", length = 128, nullable = false)
     private String businessType; // Enum 으로 정의 고려
 
-    @Column(name = "contact", length = 13, nullable = false)
+    @Column(name = "contact", length = 11, nullable = false)
     private String contact;
 
     @Column(name = "description", length = Integer.MAX_VALUE, nullable = true)
diff --git a/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceImage.java b/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceImage.java
index 60970ad7..352aa7a1 100644
--- a/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceImage.java
+++ b/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceImage.java
@@ -42,7 +42,7 @@ public class WorkspaceImage {
     @ManyToOne(fetch = FetchType.LAZY)
     private Workspace workspace;
 
-    @Column(name = "file_id", nullable = false)
+    @Column(name = "file_id", length = 36, nullable = false)
     private String fileId;
 
     @Column(name = "sort_order", nullable = false)
diff --git a/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceRequestComment.java b/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceRequestComment.java
index fc87f201..a40c6f94 100644
--- a/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceRequestComment.java
+++ b/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceRequestComment.java
@@ -49,7 +49,7 @@ public class WorkspaceRequestComment {
 	private User user;
 
 	@Enumerated(EnumType.STRING)
-	@Column(name = "comment_owner", nullable = false)
+	@Column(name = "comment_owner", length = 50, nullable = false)
 	private CommentOwner commentOwner;
 
 	@Column(name = "comment", nullable = false)
diff --git a/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceRequestImage.java b/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceRequestImage.java
index c740566b..646b77cc 100644
--- a/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceRequestImage.java
+++ b/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceRequestImage.java
@@ -39,7 +39,7 @@ public class WorkspaceRequestImage {
     @ManyToOne(fetch = FetchType.LAZY)
     private WorkspaceRequest workspaceRequest;
 
-    @Column(name = "file_id", nullable = false)
+    @Column(name = "file_id", length = 36, nullable = false)
     private String fileId;
 
     @Column(name = "sort_order", nullable = false)
diff --git a/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceShift.java b/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceShift.java
index 0b010eee..01d8f583 100644
--- a/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceShift.java
+++ b/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceShift.java
@@ -36,7 +36,7 @@ public class WorkspaceShift {
     private String position;
 
     @Enumerated(EnumType.STRING)
-    @Column(name = "status", nullable = false)
+    @Column(name = "status", length = 20, nullable = false)
     private WorkspaceShiftStatus status;
 
     @JoinColumn(name = "worker_id")
diff --git a/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceWorker.java b/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceWorker.java
index f0004377..b86f768f 100644
--- a/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceWorker.java
+++ b/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceWorker.java
@@ -35,7 +35,7 @@ public class WorkspaceWorker {
     private User user;
 
     @Enumerated(EnumType.STRING)
-    @Column(name = "status", nullable = false)
+    @Column(name = "status", length = 20, nullable = false)
     private WorkspaceWorkerStatus status;
 
     @Builder.Default
diff --git a/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceWorkerSchedule.java b/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceWorkerSchedule.java
index 574b76c5..31f11835 100644
--- a/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceWorkerSchedule.java
+++ b/src/main/java/com/dreamteam/alter/domain/workspace/entity/WorkspaceWorkerSchedule.java
@@ -48,21 +48,21 @@ public class WorkspaceWorkerSchedule {
 	private WorkspaceWorker workspaceWorker;
 
 	@Enumerated(EnumType.STRING)
-	@Column(name = "start_day_of_week", nullable = false)
+	@Column(name = "start_day_of_week", length = 16, nullable = false)
 	private DayOfWeek startDayOfWeek;
 
 	@Column(name = "start_time", nullable = false)
 	private LocalTime startTime;
 
 	@Enumerated(EnumType.STRING)
-	@Column(name = "end_day_of_week", nullable = false)
+	@Column(name = "end_day_of_week", length = 16, nullable = false)
 	private DayOfWeek endDayOfWeek;
 
 	@Column(name = "end_time", nullable = false)
 	private LocalTime endTime;
 
 	@Enumerated(EnumType.STRING)
-	@Column(name = "status", nullable = false)
+	@Column(name = "status", length = 32, nullable = false)
 	private WorkspaceWorkerScheduleStatus status;
 
 	@CreatedDate
diff --git a/src/main/resources/db/migration/V2__align_entity_db_column_lengths.sql b/src/main/resources/db/migration/V2__align_entity_db_column_lengths.sql
new file mode 100644
index 00000000..45e8453e
--- /dev/null
+++ b/src/main/resources/db/migration/V2__align_entity_db_column_lengths.sql
@@ -0,0 +1,11 @@
+-- C-2: email_send_logs.email  varchar(255) -> varchar(100)
+ALTER TABLE email_send_logs
+    ALTER COLUMN email TYPE varchar(100);
+
+-- D-1: user_certificates.type  text -> varchar(24)
+ALTER TABLE user_certificates
+    ALTER COLUMN type TYPE varchar(24);
+
+-- D-2: reputation_keyword_map.description  text -> varchar(128)
+ALTER TABLE reputation_keyword_map
+    ALTER COLUMN description TYPE varchar(128);
diff --git a/src/main/resources/db/migration/V3__widen_user_anonymize_columns.sql b/src/main/resources/db/migration/V3__widen_user_anonymize_columns.sql
new file mode 100644
index 00000000..1dc75a77
--- /dev/null
+++ b/src/main/resources/db/migration/V3__widen_user_anonymize_columns.sql
@@ -0,0 +1,4 @@
+-- 탈퇴 익명화(id + "_탈퇴") 수용을 위해 name/contact 폭 확대.
+-- varchar 확대는 PostgreSQL 카탈로그 메타데이터 변경(테이블 재작성 없음, 락 순간적).
+ALTER TABLE users ALTER COLUMN name    TYPE varchar(30);
+ALTER TABLE users ALTER COLUMN contact TYPE varchar(30);