diff --git a/app/Domain/DailySummaryRetriever.php b/app/Domain/DailySummaryRetriever.php
index 7bc0a3cd..7137cc7c 100644
--- a/app/Domain/DailySummaryRetriever.php
+++ b/app/Domain/DailySummaryRetriever.php
@@ -89,21 +89,6 @@ public function getUpcomingRemoteDays(Carbon $date): Collection
             ->get();
     }
 
-    /**
-     * @return Collection<User>
-     */
-    public function getBirthdays(Carbon $date): Collection
-    {
-        return User::query()
-            ->whereRelation(
-                "profile",
-                fn(Builder $query): Builder => $query
-                    ->whereMonth("birthday", $date->month)
-                    ->whereDay("birthday", $date->day),
-            )
-            ->get();
-    }
-
     /**
      * @return Collection<User>
      */
diff --git a/app/Domain/EmployeesMilestonesRetriever.php b/app/Domain/EmployeesMilestonesRetriever.php
new file mode 100644
index 00000000..787c9117
--- /dev/null
+++ b/app/Domain/EmployeesMilestonesRetriever.php
@@ -0,0 +1,48 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Domain;
+
+use Illuminate\Support\Carbon;
+use Illuminate\Support\Collection;
+use Toby\Eloquent\Models\User;
+
+class EmployeesMilestonesRetriever
+{
+    public function __construct(
+        protected VacationTypeConfigRetriever $configRetriever,
+    ) {}
+
+    public function getResults(?string $searchText, ?string $sort): Collection
+    {
+        return match ($sort) {
+            "birthday-asc" => $this->getUpcomingBirthdays($searchText),
+            "birthday-desc" => $this->getUpcomingBirthdays($searchText, "desc"),
+            "seniority-asc" => $this->getSeniority($searchText),
+            "seniority-desc" => $this->getSeniority($searchText, "desc"),
+            default => User::query()
+                ->search($searchText)
+                ->orderByProfileField("last_name")
+                ->orderByProfileField("first_name")
+                ->get(),
+        };
+    }
+
+    public function getUpcomingBirthdays(?string $searchText, string $direction = "asc"): Collection
+    {
+        $users = User::query()
+            ->search($searchText)
+            ->get();
+
+        return $users->sortBy(fn(User $user): int => $user->upcomingBirthday()->diffInDays(Carbon::today()), descending: $direction !== "asc");
+    }
+
+    public function getSeniority(?string $searchText, string $direction = "asc"): Collection
+    {
+        return User::query()
+            ->search($searchText)
+            ->orderByProfileField("employment_date", $direction)
+            ->get();
+    }
+}
diff --git a/app/Eloquent/Models/User.php b/app/Eloquent/Models/User.php
index 3a92ff54..54f16804 100644
--- a/app/Eloquent/Models/User.php
+++ b/app/Eloquent/Models/User.php
@@ -108,11 +108,11 @@ public function scopeSearch(Builder $query, ?string $text): Builder
             );
     }
 
-    public function scopeOrderByProfileField(Builder $query, string $field): Builder
+    public function scopeOrderByProfileField(Builder $query, string $field, string $direction = "asc"): Builder
     {
         $profileQuery = Profile::query()->select($field)->whereColumn("users.id", "profiles.user_id");
 
-        return $query->orderBy($profileQuery);
+        return $query->orderBy($profileQuery, $direction);
     }
 
     public function scopeWithVacationLimitIn(Builder $query, YearPeriod $yearPeriod): Builder
@@ -135,8 +135,12 @@ public function scopeStatus(Builder $query, ?string $status): Builder
         };
     }
 
-    public function upcomingBirthday(): Carbon
+    public function upcomingBirthday(): ?Carbon
     {
+        if (!$this->profile->birthday) {
+            return null;
+        }
+
         $today = Carbon::today();
 
         $birthday = $this->profile->birthday->setYear($today->year);
@@ -148,11 +152,37 @@ public function upcomingBirthday(): Carbon
         return $birthday;
     }
 
+    public function seniority(): ?string
+    {
+        $employmentDate = $this->profile->employment_date;
+
+        if ($employmentDate->isFuture() || $employmentDate->isToday()) {
+            return null;
+        }
+
+        return $employmentDate->longAbsoluteDiffForHumans(Carbon::today(), 2);
+    }
+
     public function routeNotificationForSlack()
     {
         return $this->profile->slack_id;
     }
 
+    public function isWorkAnniversaryToday(): bool
+    {
+        $today = Carbon::now();
+
+        $employmentDate = $this->profile->employment_date;
+
+        if ($employmentDate->isToday()) {
+            return false;
+        }
+
+        $workAnniversary = $employmentDate->setYear($today->year);
+
+        return $workAnniversary->isToday();
+    }
+
     protected static function newFactory(): UserFactory
     {
         return UserFactory::new();
diff --git a/app/Infrastructure/Http/Controllers/EmployeesMilestonesController.php b/app/Infrastructure/Http/Controllers/EmployeesMilestonesController.php
new file mode 100644
index 00000000..c35977e6
--- /dev/null
+++ b/app/Infrastructure/Http/Controllers/EmployeesMilestonesController.php
@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Infrastructure\Http\Controllers;
+
+use Illuminate\Http\Request;
+use Inertia\Response;
+use Toby\Domain\EmployeesMilestonesRetriever;
+use Toby\Infrastructure\Http\Resources\EmployeeMilestoneResource;
+
+class EmployeesMilestonesController extends Controller
+{
+    public function index(Request $request, EmployeesMilestonesRetriever $employeesMilestoneRetriever): Response
+    {
+        $searchText = $request->query("search");
+        $sort = $request->query("sort");
+
+        $users = $employeesMilestoneRetriever->getResults($searchText, $sort);
+
+        return inertia("EmployeesMilestones", [
+            "users" => EmployeeMilestoneResource::collection($users),
+            "filters" => [
+                "search" => $searchText,
+                "sort" => $sort,
+            ],
+        ]);
+    }
+}
diff --git a/app/Infrastructure/Http/Requests/UserRequest.php b/app/Infrastructure/Http/Requests/UserRequest.php
index c0a4e165..5e539127 100644
--- a/app/Infrastructure/Http/Requests/UserRequest.php
+++ b/app/Infrastructure/Http/Requests/UserRequest.php
@@ -22,7 +22,7 @@ public function rules(): array
             "position" => ["required"],
             "employmentForm" => ["required", new Enum(EmploymentForm::class)],
             "employmentDate" => ["required", "date_format:Y-m-d"],
-            "birthday" => ["nullable", "date_format:Y-m-d"],
+            "birthday" => ["required", "date_format:Y-m-d", "before:today"],
             "slackId" => [],
             "nextMedicalExamDate" => ["nullable", "after:lastMedicalExamDate"],
             "nextOhsTrainingDate" => ["nullable", "after:lastOhsTrainingDate"],
diff --git a/app/Infrastructure/Http/Resources/EmployeeMilestoneResource.php b/app/Infrastructure/Http/Resources/EmployeeMilestoneResource.php
new file mode 100644
index 00000000..a3ffd3bb
--- /dev/null
+++ b/app/Infrastructure/Http/Resources/EmployeeMilestoneResource.php
@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Toby\Infrastructure\Http\Resources;
+
+use Carbon\CarbonInterface;
+use Illuminate\Http\Resources\Json\JsonResource;
+use Illuminate\Support\Carbon;
+
+class EmployeeMilestoneResource extends JsonResource
+{
+    public static $wrap = null;
+
+    public function toArray($request): array
+    {
+        $upcomingBirthday = $this->upcomingBirthday();
+        $seniority = $this->seniority();
+        $isSeniorityAnniversaryToday = $this->isWorkAnniversaryToday();
+
+        return [
+            "user" => new SimpleUserResource($this->resource),
+            "birthdayDisplayDate" => $upcomingBirthday?->toDisplayString(),
+            "birthdayRelativeDate" => $upcomingBirthday?->isToday()
+                ? __("today")
+                : $upcomingBirthday?->diffForHumans(
+                    Carbon::today(),
+                    ["options" => CarbonInterface::ONE_DAY_WORDS, "syntax" => CarbonInterface::DIFF_RELATIVE_TO_NOW],
+                ),
+            "isBirthdayToday" => (bool)$upcomingBirthday?->isToday(),
+            "seniorityDisplayDate" => $seniority,
+            "isWorkAnniversaryToday" => $isSeniorityAnniversaryToday,
+            "employmentDate" => $this->profile->employment_date->toDisplayString(),
+        ];
+    }
+}
diff --git a/app/Infrastructure/Http/Resources/UserFormDataResource.php b/app/Infrastructure/Http/Resources/UserFormDataResource.php
index 145a2883..2a5f0615 100644
--- a/app/Infrastructure/Http/Resources/UserFormDataResource.php
+++ b/app/Infrastructure/Http/Resources/UserFormDataResource.php
@@ -21,7 +21,7 @@ public function toArray($request): array
             "position" => $this->profile->position,
             "employmentForm" => $this->profile->employment_form,
             "employmentDate" => $this->profile->employment_date->toDateString(),
-            "birthday" => $this->profile->birthday?->toDateString(),
+            "birthday" => $this->profile->birthday->toDateString(),
             "slackId" => $this->profile->slack_id,
             "lastMedicalExamDate" => $this->profile->last_medical_exam_date?->toDateString(),
             "nextMedicalExamDate" => $this->profile->next_medical_exam_date?->toDateString(),
diff --git a/lang/pl/validation.php b/lang/pl/validation.php
index afb575da..cb5e6205 100644
--- a/lang/pl/validation.php
+++ b/lang/pl/validation.php
@@ -180,6 +180,9 @@
         "nextMedicalExamDate" => [
             "after" => "Data następnego badania lekarskiego musi być późniejsza od daty ostatniego badania lekarskiego.",
         ],
+        "birthday" => [
+            "before" => "Data urodzenia musi być datą wcześniejszą od dzisiaj.",
+        ],
     ],
     "attributes" => [
         "to" => "do",
@@ -196,5 +199,6 @@
         "isMobile" => "mobilny",
         "assignee" => "przydzielona osoba",
         "assignedAt" => "data przydzielenia",
+        "birthday" => "data urodzenia",
     ],
 ];
diff --git a/resources/js/Pages/EmployeesMilestones.vue b/resources/js/Pages/EmployeesMilestones.vue
new file mode 100644
index 00000000..e549e98f
--- /dev/null
+++ b/resources/js/Pages/EmployeesMilestones.vue
@@ -0,0 +1,237 @@
+<script setup>
+import EmptyState from '@/Shared/Feedbacks/EmptyState.vue'
+import { MagnifyingGlassIcon } from '@heroicons/vue/24/outline'
+import { reactive, watch } from 'vue'
+import { debounce } from 'lodash'
+import { Inertia } from '@inertiajs/inertia'
+import { CheckIcon, ChevronUpDownIcon, CalendarDaysIcon, CakeIcon } from '@heroicons/vue/24/solid'
+import { Listbox,
+  ListboxButton,
+  ListboxOption,
+  ListboxOptions,
+} from '@headlessui/vue'
+
+const sortOptions = [
+  {
+    name: 'Sortowanie domyślne',
+    value: null,
+  },
+  {
+    name: 'Urodziny od najbliższej daty',
+    value: 'birthday-asc',
+  },
+  {
+    name: 'Urodziny od najdalszej daty',
+    value: 'birthday-desc',
+  },
+  {
+    name: 'Najdłuższy staż pracy',
+    value: 'seniority-asc',
+  },
+  {
+    name: 'Najkrótszy staż pracy',
+    value: 'seniority-desc',
+  },
+]
+
+const props = defineProps({
+  users: Object,
+  filters: Object,
+})
+
+const form = reactive({
+  search: props.filters.search,
+  sort: sortOptions.find(item => item.value === props.filters.sort) ?? sortOptions[0],
+})
+
+watch(form, debounce(() => {
+  Inertia.get('/employees-milestones', {
+    search: form.search,
+    sort: form.sort?.value ?? undefined,
+  }, {
+    preserveState: true,
+    replace: true,
+  })
+}, 300))
+
+</script>
+
+<template>
+  <InertiaHead title="Jubileusze" />
+  <div class="bg-white shadow-md">
+    <div class="flex justify-between items-center p-4 sm:px-6">
+      <div>
+        <h2 class="text-lg font-medium leading-6 text-gray-900">
+          Jubileusze
+        </h2>
+      </div>
+    </div>
+    <div class="border-t border-gray-200">
+      <div class="flex-1 grid grid-cols-1 p-4 md:grid-cols-3 gap-4">
+        <div class="relative">
+          <div class="pointer-events-none absolute inset-y-0 left-0 pl-3 flex items-center">
+            <MagnifyingGlassIcon class="w-5 h-5 text-gray-400" />
+          </div>
+          <input
+            v-model.trim="form.search"
+            type="search"
+            class="block py-2 pr-3 pl-10 w-full max-w-lg placeholder:text-gray-500 focus:text-gray-900 focus:placeholder:text-gray-400 bg-white rounded-md border border-gray-300 focus:border-blumilk-500 focus:outline-none focus:ring-1 focus:ring-blumilk-500 sm:text-sm"
+            placeholder="Szukaj"
+          >
+        </div>
+        <Listbox
+          v-model="form.sort"
+          as="div"
+        >
+          <div class="relative mt-1 sm:mt-0">
+            <ListboxButton
+              class="relative py-2 pr-10 pl-3 w-full max-w-lg text-left bg-white rounded-md border border-gray-300 focus:border-blumilk-500 focus:outline-none focus:ring-1 focus:ring-blumilk-500 shadow-sm cursor-default sm:text-sm"
+            >
+              <span class="flex items-center">
+                {{ form.sort.name }}
+              </span>
+              <span class="flex absolute inset-y-0 right-0 items-center pr-2 pointer-events-none">
+                <ChevronUpDownIcon class="w-5 h-5 text-gray-400" />
+              </span>
+            </ListboxButton>
+
+            <transition
+              leave-active-class="transition ease-in duration-100"
+              leave-from-class="opacity-100"
+              leave-to-class="opacity-0"
+            >
+              <ListboxOptions
+                class="overflow-auto absolute z-10 py-1 mt-1 w-full max-w-lg max-h-60 text-base bg-white rounded-md focus:outline-none ring-1 ring-black ring-opacity-5 shadow-lg sm:text-sm"
+              >
+                <ListboxOption
+                  v-for="option in sortOptions"
+                  :key="option.value"
+                  v-slot="{ active, selected }"
+                  as="template"
+                  :value="option"
+                >
+                  <li
+                    :class="[active ? 'bg-gray-100' : 'text-gray-900', 'cursor-default truncate select-none relative py-2 pl-3 pr-9']"
+                  >
+                    {{ option.name }}
+
+                    <span
+                      v-if="selected"
+                      :class="['text-blumilk-600 absolute inset-y-0 right-0 flex items-center pr-4']"
+                    >
+                      <CheckIcon class="w-5 h-5" />
+                    </span>
+                  </li>
+                </ListboxOption>
+              </ListboxOptions>
+            </transition>
+          </div>
+        </Listbox>
+      </div>
+      <div class="overflow-auto xl:overflow-visible relative">
+        <table class="min-w-full divide-y divide-gray-200">
+          <thead class="bg-gray-50">
+            <tr>
+              <th
+                scope="col"
+                class="py-3 px-4 text-xs font-semibold tracking-wider text-left text-gray-500 uppercase whitespace-nowrap"
+              >
+                <span>
+                  Imię i nazwisko
+                </span>
+              </th>
+              <th
+                scope="col"
+                class="py-3 px-4 text-xs font-semibold tracking-wider text-left text-gray-500 uppercase whitespace-nowrap"
+              >
+                Następne urodziny
+              </th>
+              <th
+                scope="col"
+                class="py-3 px-4 text-xs font-semibold tracking-wider text-left text-gray-500 uppercase whitespace-nowrap"
+              >
+                Data zatrudnienia
+              </th>
+            </tr>
+          </thead>
+          <tbody class="bg-white divide-y divide-gray-100">
+            <tr
+              v-for="user in users.data"
+              :key="user.id"
+            >
+              <td class="p-4 text-sm text-gray-500 whitespace-nowrap">
+                <div class="flex">
+                  <span class="inline-flex justify-center items-center w-10 h-10 rounded-full">
+                    <img
+                      class="w-10 h-10 rounded-full"
+                      :src="user.user.avatar"
+                    >
+                  </span>
+                  <div class="ml-3">
+                    <p class="text-sm font-medium text-gray-900 break-all">
+                      {{ user.user.name }}
+                    </p>
+                    <p class="text-sm text-gray-500 break-all">
+                      {{ user.user.email }}
+                    </p>
+                  </div>
+                </div>
+              </td>
+              <td class="p-4 text-sm text-gray-500 whitespace-nowrap">
+                <div class="flex flex-col gap-1">
+                  <div>
+                    {{ user.birthdayDisplayDate }}
+                  </div>
+                  <div class="flex items-center gap-1 font-medium">
+                    {{ user.birthdayRelativeDate }}
+                    <span
+                      v-if="user.isBirthdayToday"
+                      v-tooltip.right="'urodziny'"
+                      class="inline-block"
+                    >
+                      <CakeIcon class="w-5 h-5 text-violet-400" />
+                    </span>
+                  </div>
+                </div>
+              </td>
+              <td class="p-4 text-sm text-gray-500 whitespace-nowrap">
+                <div class="flex flex-col gap-1">
+                  <div>
+                    {{ user.employmentDate }}
+                  </div>
+                  <div class="flex items-center gap-1 font-medium">
+                    <div>{{ user.seniorityDisplayDate ? user.seniorityDisplayDate : '-' }}</div>
+                    <span
+                      v-if="user.isWorkAnniversaryToday"
+                      v-tooltip.right="'okrągła rocznica pracy'"
+                      class="inline-block"
+                    >
+                      <CalendarDaysIcon class="w-5 h-5 text-pink-400" />
+                    </span>
+                  </div>
+                </div>
+              </td>
+            </tr>
+            <tr
+              v-if="! users.data.length"
+            >
+              <td
+                colspan="100%"
+                class="py-4 text-xl leading-5 text-center text-gray-700"
+              >
+                <EmptyState>
+                  <template #title>
+                    Nie znaleziono użytkownika
+                  </template>
+                  <template #text>
+                    Spróbuj sformułować zapytanie inaczej
+                  </template>
+                </EmptyState>
+              </td>
+            </tr>
+          </tbody>
+        </table>
+      </div>
+    </div>
+  </div>
+</template>
diff --git a/resources/js/Shared/MainMenu.vue b/resources/js/Shared/MainMenu.vue
index 3e081c99..e7c6d137 100644
--- a/resources/js/Shared/MainMenu.vue
+++ b/resources/js/Shared/MainMenu.vue
@@ -29,6 +29,7 @@ import {
   BanknotesIcon,
   ComputerDesktopIcon,
   DocumentDuplicateIcon,
+  CakeIcon,
 } from '@heroicons/vue/24/outline'
 import { CheckIcon, ChevronDownIcon } from '@heroicons/vue/24/solid'
 
@@ -102,6 +103,13 @@ const miscNavigation = computed(() => [
     icon: UserGroupIcon,
     can: props.auth.can.manageUsers,
   },
+  {
+    name: 'Jubileusze',
+    href: '/employees-milestones',
+    section: 'EmployeesMilestones',
+    icon: CakeIcon,
+    can: true,
+  },
   {
     name: 'Klucze',
     href: '/keys',
diff --git a/routes/web.php b/routes/web.php
index 006c0fb7..18cc5408 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -8,6 +8,7 @@
 use Toby\Infrastructure\Http\Controllers\BenefitController;
 use Toby\Infrastructure\Http\Controllers\BenefitsReportController;
 use Toby\Infrastructure\Http\Controllers\DashboardController;
+use Toby\Infrastructure\Http\Controllers\EmployeesMilestonesController;
 use Toby\Infrastructure\Http\Controllers\EquipmentController;
 use Toby\Infrastructure\Http\Controllers\EquipmentLabelController;
 use Toby\Infrastructure\Http\Controllers\GoogleController;
@@ -103,6 +104,9 @@
     Route::post("/keys/{key}/give", [KeysController::class, "give"]);
     Route::post("/keys/{key}/leave-in-the-office", [KeysController::class, "leaveInTheOffice"]);
 
+    Route::get("/employees-milestones", [EmployeesMilestonesController::class, "index"])
+        ->name("employees-milestones");
+
     Route::post("/year-periods/{yearPeriod}/select", SelectYearPeriodController::class)
         ->whereNumber("yearPeriod")
         ->name("year-periods.select");
diff --git a/tests/Feature/EmployeesMilestonesTest.php b/tests/Feature/EmployeesMilestonesTest.php
new file mode 100644
index 00000000..a5d3054d
--- /dev/null
+++ b/tests/Feature/EmployeesMilestonesTest.php
@@ -0,0 +1,102 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Feature;
+
+use Illuminate\Foundation\Testing\DatabaseMigrations;
+use Illuminate\Support\Carbon;
+use Inertia\Testing\AssertableInertia as Assert;
+use Tests\FeatureTestCase;
+use Toby\Domain\EmployeesMilestonesRetriever;
+use Toby\Eloquent\Models\User;
+
+class EmployeesMilestonesTest extends FeatureTestCase
+{
+    use DatabaseMigrations;
+
+    protected EmployeesMilestonesRetriever $employeesMilestonesRetriever;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->employeesMilestonesRetriever = $this->app->make(EmployeesMilestonesRetriever::class);
+    }
+
+    public function testUserCanSeeEmployeesMilestonesList(): void
+    {
+        $user = User::factory()->create();
+
+        User::factory()->count(9)->create();
+
+        $this->actingAs($user)
+            ->get("/employees-milestones")
+            ->assertOk()
+            ->assertInertia(
+                fn(Assert $page) => $page
+                    ->component("EmployeesMilestones")
+                    ->has("users.data", 10),
+            );
+    }
+
+    public function testSortingByBirthdays(): void
+    {
+        $user1 = User::factory()
+            ->hasProfile(["birthday" => Carbon::createFromDate(1998, 1, 1)])
+            ->employee()
+            ->create();
+
+        $user2 = User::factory()
+            ->hasProfile(["birthday" => Carbon::createFromDate(2000, 12, 30)])
+            ->employee()
+            ->create();
+
+        $user3 = User::factory()
+            ->hasProfile(["birthday" => Carbon::createFromDate(1997, 5, 22)])
+            ->employee()
+            ->create();
+
+        $sortedUsersByUpcomingBirthday = $this->employeesMilestonesRetriever->getResults(null, "birthday-asc")->values();
+
+        $this->assertEquals($user1->id, $sortedUsersByUpcomingBirthday[0]->id);
+        $this->assertEquals($user3->id, $sortedUsersByUpcomingBirthday[1]->id);
+        $this->assertEquals($user2->id, $sortedUsersByUpcomingBirthday[2]->id);
+
+        $sortedUsersByFurthestBirthday = $this->employeesMilestonesRetriever->getResults(null, "birthday-desc")->values();
+
+        $this->assertEquals($user2->id, $sortedUsersByFurthestBirthday[0]->id);
+        $this->assertEquals($user3->id, $sortedUsersByFurthestBirthday[1]->id);
+        $this->assertEquals($user1->id, $sortedUsersByFurthestBirthday[2]->id);
+    }
+
+    public function testSortingBySeniority(): void
+    {
+        $user1 = User::factory()
+            ->hasProfile(["employment_date" => Carbon::createFromDate(2023, 1, 31)])
+            ->employee()
+            ->create();
+
+        $user2 = User::factory()
+            ->hasProfile(["employment_date" => Carbon::createFromDate(2022, 1, 1)])
+            ->employee()
+            ->create();
+
+        $user3 = User::factory()
+            ->hasProfile(["employment_date" => Carbon::createFromDate(2021, 10, 4)])
+            ->employee()
+            ->create();
+
+        $sortedUsersByLongestSeniority = $this->employeesMilestonesRetriever->getResults(null, "seniority-asc")->values();
+
+        $this->assertEquals($user3->id, $sortedUsersByLongestSeniority[0]->id);
+        $this->assertEquals($user2->id, $sortedUsersByLongestSeniority[1]->id);
+        $this->assertEquals($user1->id, $sortedUsersByLongestSeniority[2]->id);
+
+        $sortedUsersByShortestSeniority = $this->employeesMilestonesRetriever->getResults(null, "seniority-desc")->values();
+
+        $this->assertEquals($user1->id, $sortedUsersByShortestSeniority[0]->id);
+        $this->assertEquals($user2->id, $sortedUsersByShortestSeniority[1]->id);
+        $this->assertEquals($user3->id, $sortedUsersByShortestSeniority[2]->id);
+    }
+}
diff --git a/tests/Feature/UserTest.php b/tests/Feature/UserTest.php
index 3326be34..c52b15bf 100644
--- a/tests/Feature/UserTest.php
+++ b/tests/Feature/UserTest.php
@@ -101,6 +101,7 @@ public function testAdminCanCreateUser(): void
                 "email" => "john.doe@example.com",
                 "employmentForm" => EmploymentForm::B2bContract->value,
                 "employmentDate" => Carbon::now()->toDateString(),
+                "birthday" => Carbon::create(1990, 5, 31)->toDateString(),
             ])
             ->assertSessionHasNoErrors();
 
@@ -121,6 +122,7 @@ public function testAdminCanCreateUser(): void
             "position" => "Test position",
             "employment_form" => EmploymentForm::B2bContract->value,
             "employment_date" => Carbon::now()->toDateString(),
+            "birthday" => Carbon::create(1990, 5, 31)->toDateString(),
         ]);
     }
 
@@ -137,6 +139,7 @@ public function testItCreatesProperPermissionsWhileCreatingUser(): void
                 "email" => "john.doe@example.com",
                 "employmentForm" => EmploymentForm::B2bContract->value,
                 "employmentDate" => Carbon::now()->toDateString(),
+                "birthday" => Carbon::create(1990, 5, 31)->toDateString(),
             ])
             ->assertSessionHasNoErrors();
 
@@ -165,6 +168,7 @@ public function testAdminCanEditUser(): void
             "last_name" => $user->profile->last_name,
             "employment_form" => $user->profile->employment_form->value,
             "employment_date" => $user->profile->employment_date->toDateString(),
+            "birthday" => $user->profile->birthday->toDateString(),
         ]);
 
         $this->actingAs($admin)
@@ -176,6 +180,7 @@ public function testAdminCanEditUser(): void
                 "position" => "Test position",
                 "employmentForm" => EmploymentForm::B2bContract->value,
                 "employmentDate" => Carbon::now()->toDateString(),
+                "birthday" => Carbon::create(1990, 5, 31)->toDateString(),
             ])
             ->assertSessionHasNoErrors();
 
@@ -192,6 +197,7 @@ public function testAdminCanEditUser(): void
             "position" => "Test position",
             "employment_form" => EmploymentForm::B2bContract->value,
             "employment_date" => Carbon::now()->toDateString(),
+            "birthday" => Carbon::create(1990, 5, 31)->toDateString(),
         ]);
     }
 
@@ -239,6 +245,7 @@ public function testChangingUserRoleUpdatesPermissions(): void
                 "position" => "Test position",
                 "employmentForm" => EmploymentForm::B2bContract->value,
                 "employmentDate" => Carbon::now()->toDateString(),
+                "birthday" => Carbon::create(1990, 5, 31)->toDateString(),
             ])
             ->assertSessionHasNoErrors();