diff --git a/src/entity/cashier/cashier.ts b/src/entity/cashier/cashier.ts
index 1974ce1..f02688d 100644
--- a/src/entity/cashier/cashier.ts
+++ b/src/entity/cashier/cashier.ts
@@ -13,6 +13,7 @@ import {
 import { EmrRegistration } from "../emr/emr_registration";
 import { Room } from "../room";
 import { CashierItem } from "./cashier_item";
+import { BillingStatus } from "../../types/billing_status";
 
 @Entity("cashiers", { schema: "cashier" })
 export class Cashier {
@@ -51,8 +52,8 @@ export class Cashier {
     })
     balance_due: number;
 
-    @Column({ nullable: true, type: "text" })
-    status: string;
+    @Column({ nullable: true })
+    status: BillingStatus;
 
     @Column()
     @CreateDateColumn()
diff --git a/src/entity/cashier/cashier_item.ts b/src/entity/cashier/cashier_item.ts
index c84c5aa..16fab4d 100644
--- a/src/entity/cashier/cashier_item.ts
+++ b/src/entity/cashier/cashier_item.ts
@@ -16,6 +16,7 @@ import { Service } from "../service";
 import { ServiceType } from "../service_type";
 import { ItemType } from "../pharmacy/item_type";
 import { ItemMaster } from "../pharmacy/item_master";
+import { BillingItemStatus } from "../../types/billing_item_status";
 
 @Entity("cashier_item", { schema: "cashier" })
 export class CashierItem {
@@ -96,8 +97,8 @@ export class CashierItem {
     })
     balance_due: number;
 
-    @Column({ nullable: true, type: "text" })
-    status: string;
+    @Column({ nullable: true })
+    status: BillingItemStatus;
 
     @Column({ nullable: true, length: 256 })
     category: string;
diff --git a/src/schema/cashier.ts b/src/schema/cashier.ts
index b375b89..e90c79d 100644
--- a/src/schema/cashier.ts
+++ b/src/schema/cashier.ts
@@ -2,3 +2,6 @@ export * from "../entity/cashier/cashier";
 export * from "../entity/cashier/cashier_item";
 export * from "../entity/cashier/payment_received";
 export * from "../entity/cashier/payment_received_item";
+
+export * from "../types/billing_status";
+export * from "../types/billing_item_status";
diff --git a/src/types/billing_item_status.ts b/src/types/billing_item_status.ts
new file mode 100644
index 0000000..681537b
--- /dev/null
+++ b/src/types/billing_item_status.ts
@@ -0,0 +1,9 @@
+/**
+ * Workflow status for cashier billing item.
+ * Paid: billing item has been fully paid
+ * Unpaid: billing item has not been paid
+ */
+export enum BillingItemStatus {
+    PAID = "PAID",
+    UNPAID = "UNPAID",
+}
\ No newline at end of file