diff --git a/src/api/middleware/company.js b/src/api/middleware/company.js
index 9cfc51ca..6542b20c 100644
--- a/src/api/middleware/company.js
+++ b/src/api/middleware/company.js
@@ -6,6 +6,7 @@ import CompanyConstants from "../../models/constants/Company.js";
 import Offer from "../../models/Offer.js";
 import CompanyService from "../../services/company.js";
 import OfferService from "../../services/offer.js";
+import { existingModel } from "./utils.js";
 
 export const verifyMaxConcurrentOffers = (owner, publishDate, publishEndDate, offerId) => async (req, res, next) => {
 
@@ -122,3 +123,15 @@ export const canManageAccountSettings = (companyId) => async (req, res, next) =>
     }
     return next();
 };
+
+export const existingCompany = existingModel(
+    (param, req) =>
+        new CompanyService().findById(
+            param,
+            req.hasAdminPrivileges,
+            req.hasAdminPrivileges
+        ),
+    "companyId",
+    "company",
+    ValidationReasons.COMPANY_NOT_FOUND
+);
diff --git a/src/api/middleware/offer.js b/src/api/middleware/offer.js
index 0fcd512b..a01eae22 100644
--- a/src/api/middleware/offer.js
+++ b/src/api/middleware/offer.js
@@ -1,6 +1,7 @@
 import OfferService from "../../services/offer.js";
 import * as companyMiddleware from "./company.js";
-import { when } from "./utils.js";
+import { when, existingModel } from "./utils.js";
+import ValidationReasons from "./validators/validationReasons.js";
 
 export const isOwnerNotDisabled = async (req, res, next) => {
     const offer = await (new OfferService()).getOfferById(req.params.offerId, req.targetOwner, true);
@@ -24,3 +25,16 @@ export const setTargetOwner = (req, res, next) => {
 
     return next();
 };
+
+export const existingOffer = existingModel(
+    (param, req) =>
+        new OfferService().getOfferById(
+            param,
+            req.targetOwner,
+            req.hasAdminPrivileges,
+            req.hasAdminPrivileges
+        ),
+    "offerId",
+    "offer",
+    ValidationReasons.OFFER_NOT_FOUND
+);
diff --git a/src/api/middleware/utils.js b/src/api/middleware/utils.js
index 8d8522cc..8e22aa86 100644
--- a/src/api/middleware/utils.js
+++ b/src/api/middleware/utils.js
@@ -94,3 +94,17 @@ export const storeInLocals = (req, obj) => {
         ...obj,
     };
 };
+
+export const existingModel = (fn, param, variable, error) => async (req, res, next) => {
+    const model = await fn(req.params[param], req);
+
+    if (!model) return next(new APIError(
+        HTTPStatus.NOT_FOUND,
+        ErrorTypes.FORBIDDEN,
+        error(req.params[param])
+    ));
+
+    req[variable] = model;
+
+    return next();
+};
diff --git a/test/end-to-end/company.js b/test/end-to-end/company.js
index 32c10d9c..6a8a3865 100644
--- a/test/end-to-end/company.js
+++ b/test/end-to-end/company.js
@@ -571,7 +571,7 @@ describe("Company endpoint", () => {
             const res = await test_agent
                 .put(`/company/${id}/block`)
                 .send({ adminReason })
-                .expect(HTTPStatus.UNPROCESSABLE_ENTITY);
+                .expect(HTTPStatus.NOT_FOUND);
             expect(res.body).toHaveProperty("error_code", ErrorTypes.VALIDATION_ERROR);
             expect(res.body).toHaveProperty("errors");
             expect(res.body.errors[0]).toHaveProperty("param", "companyId");
@@ -812,7 +812,7 @@ describe("Company endpoint", () => {
             const id = "111111111111111111111111";
             const res = await test_agent
                 .put(`/company/${id}/unblock`)
-                .expect(HTTPStatus.UNPROCESSABLE_ENTITY);
+                .expect(HTTPStatus.NOT_FOUND);
             expect(res.body).toHaveProperty("error_code", ErrorTypes.VALIDATION_ERROR);
             expect(res.body).toHaveProperty("errors");
             expect(res.body.errors[0]).toHaveProperty("param", "companyId");
@@ -1123,7 +1123,7 @@ describe("Company endpoint", () => {
                 const res = await test_agent
                     .put(`/company/${id}/enable`)
                     .send(withGodToken())
-                    .expect(HTTPStatus.UNPROCESSABLE_ENTITY);
+                    .expect(HTTPStatus.NOT_FOUND);
 
                 expect(res.body).toHaveProperty("error_code", ErrorTypes.VALIDATION_ERROR);
                 expect(res.body).toHaveProperty("errors");
@@ -1368,7 +1368,7 @@ describe("Company endpoint", () => {
                 const res = await test_agent
                     .put(`/company/${id}/disable`)
                     .send(withGodToken())
-                    .expect(HTTPStatus.UNPROCESSABLE_ENTITY);
+                    .expect(HTTPStatus.NOT_FOUND);
 
                 expect(res.body).toHaveProperty("error_code", ErrorTypes.VALIDATION_ERROR);
                 expect(res.body).toHaveProperty("errors");
@@ -1567,7 +1567,7 @@ describe("Company endpoint", () => {
                 const res = await test_agent
                     .post(`/company/${id}/delete`)
                     .send(withGodToken())
-                    .expect(HTTPStatus.UNPROCESSABLE_ENTITY);
+                    .expect(HTTPStatus.NOT_FOUND);
 
                 expect(res.body).toHaveProperty("error_code", ErrorTypes.VALIDATION_ERROR);
                 expect(res.body).toHaveProperty("errors");
@@ -1766,7 +1766,7 @@ describe("Company endpoint", () => {
                 const res = await test_agent
                     .get(`/company/${id}/hasReachedMaxConcurrentOffersBetweenDates`)
                     .send(withGodToken({ publishDate, publishEndDate }))
-                    .expect(HTTPStatus.UNPROCESSABLE_ENTITY);
+                    .expect(HTTPStatus.NOT_FOUND);
 
                 expect(res.body).toHaveProperty("error_code", ErrorTypes.VALIDATION_ERROR);
                 expect(res.body).toHaveProperty("errors");
diff --git a/test/end-to-end/offer.js b/test/end-to-end/offer.js
index 4fa37786..eada31ae 100644
--- a/test/end-to-end/offer.js
+++ b/test/end-to-end/offer.js
@@ -3025,7 +3025,7 @@ describe("Offer endpoint tests", () => {
                 const res = await test_agent
                     .post(`/offers/edit/${_id}`)
                     .send(withGodToken())
-                    .expect(HTTPStatus.UNPROCESSABLE_ENTITY);
+                    .expect(HTTPStatus.NOT_FOUND);
                 expect(res.body.errors[0]).toHaveProperty("param", "offerId");
                 expect(res.body.errors[0]).toHaveProperty("msg", ValidationReasons.OFFER_NOT_FOUND(_id));
             });
@@ -4501,7 +4501,7 @@ describe("Offer endpoint tests", () => {
             const res = await test_agent
                 .put(`/offers/${_id}/archive`)
                 .send(withGodToken())
-                .expect(HTTPStatus.UNPROCESSABLE_ENTITY);
+                .expect(HTTPStatus.NOT_FOUND);
 
             expect(res.body.errors[0]).toHaveProperty("param", "offerId");
             expect(res.body.errors[0]).toHaveProperty("msg", ValidationReasons.OFFER_NOT_FOUND(_id));