diff --git a/src/app/api/approveEmployees/route.ts b/src/app/api/approveEmployees/route.ts
index 24ca5f3..6208191 100644
--- a/src/app/api/approveEmployees/route.ts
+++ b/src/app/api/approveEmployees/route.ts
@@ -3,23 +3,25 @@ import { db } from "../../../server/db/index";
 import { users } from "../../../server/db/schema";
 import { eq } from "drizzle-orm";
 import { auth } from "@clerk/nextjs/server";
-import * as console from "console";
-
-type PostBody = {
-    employeeId: string;
-}
+import { validateRequestBody, EmployeeIdSchema } from "~/lib/validation";
 
 
 export async function POST(request: Request) {
     try {
+        // Validate request body first
+        const validation = await validateRequestBody(request, EmployeeIdSchema);
+        if (!validation.success) {
+            return validation.response;
+        }
+
         const { userId } = await auth();
-        
+
         if (!userId) {
             return NextResponse.json({
                 success: false,
                 message: "Unauthorized"
             }, { status: 401 });
-        } 
+        }
 
         const [userInfo] = await db
             .select()
@@ -38,20 +40,24 @@ export async function POST(request: Request) {
             }, { status: 401 });
         }
 
-        const { employeeId } = (await request.json()) as PostBody;
+        // Use validated data
+        const { employeeId } = validation.data;
 
         await db
             .update(users)
             .set({
                 status: "verified"
             })
-            .where(eq(users.id, Number(employeeId)));
+            .where(eq(users.id, employeeId));
 
-        return NextResponse.json({ status: 200 });
+        return NextResponse.json({
+            success: true,
+            message: "Employee approved successfully"
+        });
     } catch (error: unknown) {
-        console.error("Error fetching documents:", error);
+        console.error("Error approving employee:", error);
         return NextResponse.json(
-            { error: "Unable to fetch documents" },
+            { success: false, error: "Failed to approve employee" },
             { status: 500 }
         );
     }
diff --git a/src/app/api/removeEmployees/route.ts b/src/app/api/removeEmployees/route.ts
index fe7a70c..f4e9d24 100644
--- a/src/app/api/removeEmployees/route.ts
+++ b/src/app/api/removeEmployees/route.ts
@@ -2,49 +2,55 @@ import { NextResponse } from "next/server";
 import { db } from "../../../server/db/index";
 import { users } from "../../../server/db/schema";
 import { eq } from "drizzle-orm";
-import * as console from "console";
 import { auth } from "@clerk/nextjs/server";
-
-type PostBody = {
-    employeeId: string;
-}
+import { validateRequestBody, EmployeeIdSchema } from "~/lib/validation";
 
 export async function POST(request: Request) {
-    const { userId } = await auth();
-    if (!userId) {
-        return NextResponse.json({
-            success: false,
-            message: "Unauthorized"
-        }, { status: 401 });
-    }
+    try {
+        // Validate request body first
+        const validation = await validateRequestBody(request, EmployeeIdSchema);
+        if (!validation.success) {
+            return validation.response;
+        }
 
-    const [userInfo] = await db
-        .select()
-        .from(users)
-        .where(eq(users.userId, userId));
+        const { userId } = await auth();
+        if (!userId) {
+            return NextResponse.json({
+                success: false,
+                message: "Unauthorized"
+            }, { status: 401 });
+        }
 
-    if (!userInfo) {
-        return NextResponse.json({
-            success: false,
-            message: "Invalid user."
-        }, { status: 400 });
-    } else if (userInfo.role !== "employer" && userInfo.role !== "owner") {
-        return NextResponse.json({
-            success: false,
-            message: "Unauthorized"
-        }, { status: 401 });
-    }
-    
-    try {
-        const { employeeId } = (await request.json()) as PostBody;
+        const [userInfo] = await db
+            .select()
+            .from(users)
+            .where(eq(users.userId, userId));
 
-        await db.delete(users).where(eq(users.id, Number(employeeId)));
+        if (!userInfo) {
+            return NextResponse.json({
+                success: false,
+                message: "Invalid user."
+            }, { status: 400 });
+        } else if (userInfo.role !== "employer" && userInfo.role !== "owner") {
+            return NextResponse.json({
+                success: false,
+                message: "Unauthorized"
+            }, { status: 401 });
+        }
 
-        return NextResponse.json( { status: 200 });
+        // Use validated data
+        const { employeeId } = validation.data;
+
+        await db.delete(users).where(eq(users.id, employeeId));
+
+        return NextResponse.json({
+            success: true,
+            message: "Employee removed successfully"
+        });
     } catch (error: unknown) {
-        console.error("Error fetching documents:", error);
+        console.error("Error removing employee:", error);
         return NextResponse.json(
-            { error: "Unable to fetch documents" },
+            { success: false, error: "Failed to remove employee" },
             { status: 500 }
         );
     }
diff --git a/src/app/api/signup/employee/route.ts b/src/app/api/signup/employee/route.ts
index d64497f..c30c921 100644
--- a/src/app/api/signup/employee/route.ts
+++ b/src/app/api/signup/employee/route.ts
@@ -2,18 +2,17 @@ import { NextResponse } from "next/server";
 import { db } from "~/server/db/index";
 import { users, company } from "~/server/db/schema";
 import { and, eq } from "drizzle-orm";
-
-type PostBody = {
-    userId: string;
-    name: string;
-    email: string;
-    employeePasskey: string;
-    companyName: string;
-};
+import { validateRequestBody, SignupEmployeeSchema } from "~/lib/validation";
 
 export async function POST(request: Request) {
     try {
-        const { userId, name, email, employeePasskey, companyName } = (await request.json()) as PostBody;
+        // Validate request body
+        const validation = await validateRequestBody(request, SignupEmployeeSchema);
+        if (!validation.success) {
+            return validation.response;
+        }
+
+        const { userId, name, email, employeePasskey, companyName } = validation.data;
 
         // Find company by company name
         const [existingCompany] = await db
@@ -28,7 +27,11 @@ export async function POST(request: Request) {
 
         if (!existingCompany) {
             return NextResponse.json(
-                { error: "Invalid company name or passkey." },
+                {
+                    success: false,
+                    error: "Validation Error",
+                    message: "Invalid company name or employee passkey. Please check your credentials."
+                },
                 { status: 400 }
             );
         }
@@ -36,16 +39,26 @@ export async function POST(request: Request) {
         // Insert new user
         await db.insert(users).values({
             userId,
-            name: name,
-            email: email,
+            name,
+            email,
             companyId: existingCompany.id.toString(),
             status: "pending",
             role: "employee",
         });
 
-        return NextResponse.json({ success: true });
+        return NextResponse.json({
+            success: true,
+            message: "Employee account created successfully. Awaiting approval."
+        });
     } catch (error: unknown) {
-        console.error(error);
-        return NextResponse.json({ error: error }, { status: 500 });
+        console.error("Error during employee signup:", error);
+        return NextResponse.json(
+            {
+                success: false,
+                error: "Registration failed",
+                message: "An error occurred during registration. Please try again."
+            },
+            { status: 500 }
+        );
     }
 }
\ No newline at end of file
diff --git a/src/app/api/signup/employer/route.ts b/src/app/api/signup/employer/route.ts
index adac6c5..e0c9afa 100644
--- a/src/app/api/signup/employer/route.ts
+++ b/src/app/api/signup/employer/route.ts
@@ -1,23 +1,20 @@
 import { NextResponse } from "next/server";
 import { db } from "~/server/db/index";
 import { users, company } from "~/server/db/schema";
-import {and, eq} from "drizzle-orm";
-import * as console from "console";
-
-type PostBody = {
-    userId: string;
-    name: string;
-    email: string;
-    employerPasskey: string;
-    companyName: string;
-}
+import { and, eq } from "drizzle-orm";
+import { validateRequestBody, SignupEmployerSchema } from "~/lib/validation";
 
 
 export async function POST(request: Request) {
     try {
-        const {userId, name, email, employerPasskey, companyName} = (await request.json()) as PostBody;
+        // Validate request body
+        const validation = await validateRequestBody(request, SignupEmployerSchema);
+        if (!validation.success) {
+            return validation.response;
+        }
+
+        const { userId, name, email, employerPasskey, companyName } = validation.data;
 
-        let companyId: string;
         const [existingCompany] = await db
             .select()
             .from(company)
@@ -30,13 +27,16 @@ export async function POST(request: Request) {
 
         if (!existingCompany) {
             return NextResponse.json(
-                {error: "Invalid company name or passkey."},
-                {status: 400}
+                {
+                    success: false,
+                    error: "Validation Error",
+                    message: "Invalid company name or employer passkey. Please check your credentials."
+                },
+                { status: 400 }
             );
         }
 
-        // eslint-disable-next-line prefer-const
-        companyId = existingCompany.id.toString();
+        const companyId = existingCompany.id.toString();
 
         await db.insert(users).values({
             userId,
@@ -47,9 +47,19 @@ export async function POST(request: Request) {
             role: "employer",
         });
 
-    }
-    catch (error: unknown) {
-        console.error(error);
-        return NextResponse.json({ error: error}, { status: 500 });
+        return NextResponse.json({
+            success: true,
+            message: "Employer account created successfully. Awaiting approval."
+        });
+    } catch (error: unknown) {
+        console.error("Error during employer signup:", error);
+        return NextResponse.json(
+            {
+                success: false,
+                error: "Registration failed",
+                message: "An error occurred during registration. Please try again."
+            },
+            { status: 500 }
+        );
     }
 }
\ No newline at end of file
diff --git a/src/lib/validation.ts b/src/lib/validation.ts
index eef1ae8..7c0321d 100644
--- a/src/lib/validation.ts
+++ b/src/lib/validation.ts
@@ -127,3 +127,29 @@ export const EmployerAuthSchema = z.object({
   userId: z.string().min(1, "User ID is required"),
   companyPasskey: z.string().min(1, "Company passkey is required"),
 });
+
+export const EmployeeIdSchema = z.object({
+  employeeId: z.coerce
+    .number({
+      required_error: "Employee ID is required",
+      invalid_type_error: "Employee ID must be a number"
+    })
+    .int("Employee ID must be an integer")
+    .positive("Employee ID must be a positive number"),
+});
+
+export const SignupEmployeeSchema = z.object({
+  userId: z.string().min(1, "User ID is required").max(256, "User ID is too long").trim(),
+  name: z.string().min(1, "Name is required").max(256, "Name is too long").trim(),
+  email: z.string().email("Invalid email address").max(256, "Email is too long").trim(),
+  employeePasskey: z.string().min(1, "Employee passkey is required").max(256, "Employee passkey is too long"),
+  companyName: z.string().min(1, "Company name is required").max(256, "Company name is too long").trim(),
+});
+
+export const SignupEmployerSchema = z.object({
+  userId: z.string().min(1, "User ID is required").max(256, "User ID is too long").trim(),
+  name: z.string().min(1, "Name is required").max(256, "Name is too long").trim(),
+  email: z.string().email("Invalid email address").max(256, "Email is too long").trim(),
+  employerPasskey: z.string().min(1, "Employer passkey is required").max(256, "Employer passkey is too long"),
+  companyName: z.string().min(1, "Company name is required").max(256, "Company name is too long").trim(),
+});