diff --git a/Makefile b/Makefile
index f747f2c..efaa16f 100644
--- a/Makefile
+++ b/Makefile
@@ -49,4 +49,11 @@ mcp:
 	cd mcp && npm install && npm run dev
 
 api:
-	cd api && npm install && npm run dev
\ No newline at end of file
+	cd api && npm install && npm run dev
+
+# Creates a new Prisma migration in development mode.
+# Pass the migration name as an argument, e.g.:
+# make prisma-migrate-dev name=my-migration-name
+# If no name is provided, it defaults to "new_migration".
+prisma-migrate-dev:
+	cd api && npx prisma migrate deploy
diff --git a/README.md b/README.md
index 33338dc..9ed4356 100644
--- a/README.md
+++ b/README.md
@@ -132,6 +132,21 @@ docker compose down --remove-orphans
 * Arranca en puerto **80** internamente.
 * Código fuente en `ui/src/`, configuración en `vite.config.js`.
 
+### Notificaciones en tiempo real (SSE)
+
+El backend expone un endpoint `/events` que utiliza **Server-Sent Events**. La
+base de datos PostgreSQL emite mensajes mediante triggers en las tablas
+`Planilla`, `Cliente`, `TareaRealizada` y `Asistencia`. Cada cambio se
+reenvía automáticamente a los navegadores conectados.
+
+```javascript
+const source = new EventSource('http://localhost:4000/events');
+source.onmessage = (e) => {
+  const data = JSON.parse(e.data);
+  console.log('Evento recibido', data);
+};
+```
+
 #### Card Animation
 The data cards implemented in `ui/src/components/ui/NucleoDataCard.vue` now feature a subtle growing animation when hovered over. This animation is implemented purely with CSS using keyframes and transitions defined within the component's `<style scoped>` section, ensuring the styles are encapsulated and don't affect other elements.
 
diff --git a/api/prisma/migrations/20250609211800_notify_others_sse/migration.sql b/api/prisma/migrations/20250609211800_notify_others_sse/migration.sql
new file mode 100644
index 0000000..9e81f36
--- /dev/null
+++ b/api/prisma/migrations/20250609211800_notify_others_sse/migration.sql
@@ -0,0 +1,58 @@
+-- prisma/migrations/20250609211800_notify_others_sse/migration.sql
+/* 0️⃣ Limpieza */
+DROP FUNCTION IF EXISTS notify_planilla_change() CASCADE;
+DROP FUNCTION IF EXISTS notify_generic_change() CASCADE;
+
+/* 1️⃣ Función genérica */
+CREATE OR REPLACE FUNCTION notify_sse_change()
+RETURNS trigger AS $$
+DECLARE
+  payload TEXT;
+BEGIN
+  payload := json_build_object(
+    'table', TG_TABLE_NAME,
+    'operation', TG_OP,
+    'old', row_to_json(OLD),
+    'new', row_to_json(NEW)
+  )::text;
+
+  PERFORM pg_notify('sse_events', payload);
+
+  IF TG_OP = 'DELETE' THEN
+    RETURN OLD;
+  ELSE
+    RETURN NEW;
+  END IF;
+END;
+$$ LANGUAGE plpgsql;
+
+/* 2️⃣ Drop de triggers viejos (normal o constraint) */
+DROP TRIGGER IF EXISTS planilla_notify_trigger   ON "Planilla";
+DROP TRIGGER IF EXISTS cliente_notify_trigger    ON "Cliente";
+DROP TRIGGER IF EXISTS tarea_notify_trigger      ON "TareaRealizada";
+DROP TRIGGER IF EXISTS asistencia_notify_trigger ON "Asistencia";
+
+/* 3️⃣ Constraint triggers DEFERRABLE */
+CREATE CONSTRAINT TRIGGER planilla_notify_trigger
+AFTER INSERT OR UPDATE OR DELETE ON "Planilla"
+DEFERRABLE INITIALLY DEFERRED
+FOR EACH ROW
+EXECUTE PROCEDURE notify_sse_change();
+
+CREATE CONSTRAINT TRIGGER cliente_notify_trigger
+AFTER INSERT OR UPDATE OR DELETE ON "Cliente"
+DEFERRABLE INITIALLY DEFERRED
+FOR EACH ROW
+EXECUTE PROCEDURE notify_sse_change();
+
+CREATE CONSTRAINT TRIGGER tarea_notify_trigger
+AFTER INSERT OR UPDATE OR DELETE ON "TareaRealizada"
+DEFERRABLE INITIALLY DEFERRED
+FOR EACH ROW
+EXECUTE PROCEDURE notify_sse_change();
+
+CREATE CONSTRAINT TRIGGER asistencia_notify_trigger
+AFTER INSERT OR UPDATE OR DELETE ON "Asistencia"
+DEFERRABLE INITIALLY DEFERRED
+FOR EACH ROW
+EXECUTE PROCEDURE notify_sse_change();
diff --git a/api/server.js b/api/server.js
index 799f0e1..e6cd6ff 100644
--- a/api/server.js
+++ b/api/server.js
@@ -2,6 +2,7 @@ import express from 'express';
 import { PrismaClient } from './prisma/generated/client/index.js';
 import { Decimal } from '@prisma/client/runtime/library.js';
 import cors from 'cors';
+import { registerSse } from './sse/index.js';
 
 // Import new routers
 import empleadosRouter from './routes/empleados/empleados.js';
@@ -48,6 +49,9 @@ app.use(cors({
   origin: ['http://localhost:5173', 'https://planilla.interno.com'],
   credentials: true
 }));
+
+// --------- Server Sent Events setup ---------
+registerSse(app);
 // Mount new routers
 app.use('/api/empleados', empleadosRouter);
 app.use('/api/asistencias', asistenciasRouter);
diff --git a/api/sse/index.js b/api/sse/index.js
new file mode 100644
index 0000000..be9a908
--- /dev/null
+++ b/api/sse/index.js
@@ -0,0 +1,39 @@
+import pg from 'pg';
+
+export function registerSse(app) {
+  const sseClients = [];
+
+  app.get('/events', (req, res) => {
+    res.set({
+      'Content-Type': 'text/event-stream',
+      'Cache-Control': 'no-cache',
+      Connection: 'keep-alive'
+    });
+    res.flushHeaders();
+    res.write(':\n\n');
+    sseClients.push(res);
+
+    res.on('close', () => {
+      const idx = sseClients.indexOf(res);
+      if (idx !== -1) sseClients.splice(idx, 1);
+      res.end();
+    });
+  });
+
+  const broadcast = (data) => {
+    const payload = `data: ${data}\n\n`;
+    sseClients.forEach((client) => client.write(payload));
+  };
+
+  const { Client: PgClient } = pg;
+  const pgClient = new PgClient({ connectionString: process.env.DATABASE_URL });
+  pgClient.connect()
+    .then(() => pgClient.query('LISTEN sse_events'))
+    .then(() => console.log('🛎️  Listening to Postgres channel sse_events'))
+    .catch((err) => console.error('PG listen error', err));
+
+  pgClient.on('notification', (msg) => {
+    console.log('Notificación Postgres:', msg.payload);
+    broadcast(msg.payload);
+  });
+}
diff --git a/docker-compose.yml b/docker-compose.yml
index e55beec..e1444bf 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -31,7 +31,8 @@ services:
     container_name: planilla-ui
     image: gitea.interno.com/nucleo000/planilla-ui:latest
     build: ./ui
-    restart: unless-stopped
+    environment:
+      VITE_API_EVENTS_URL: http://planilla-api:4000/events
     ports:
       - "3008:80"
     networks: [planilla, principal]
diff --git a/ui/Dockerfile b/ui/Dockerfile
index deace79..ca07e77 100644
--- a/ui/Dockerfile
+++ b/ui/Dockerfile
@@ -1,10 +1,21 @@
-# planilla/ui/Dockerfile
+# Etapa de build de Vite
 FROM node:18-alpine AS build
 WORKDIR /app
+
 COPY package*.json ./
 RUN npm install
+
 COPY . .
 RUN npm run build
 
+# Etapa final con Nginx
 FROM nginx:alpine
+
+# Copia la app compilada
 COPY --from=build /app/dist /usr/share/nginx/html
+
+# Copia script que genera config.js en base a variables de entorno
+COPY runtime-env.sh /docker-entrypoint.d/
+
+# Copia configuración de Nginx para asegurar que sirva correctamente la app
+COPY nginx.conf /etc/nginx/conf.d/default.conf
diff --git a/ui/runtime-env.sh b/ui/runtime-env.sh
new file mode 100644
index 0000000..11f3440
--- /dev/null
+++ b/ui/runtime-env.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+echo "window.RUNTIME_CONFIG = {" > /usr/share/nginx/html/config.js
+echo "  VITE_API_EVENTS_URL: '${VITE_API_EVENTS_URL}'" >> /usr/share/nginx/html/config.js
+echo "};" >> /usr/share/nginx/html/config.js
diff --git a/ui/src/apiClient.js b/ui/src/apiClient.js
index e40c907..739a105 100644
--- a/ui/src/apiClient.js
+++ b/ui/src/apiClient.js
@@ -1,7 +1,7 @@
 import axios from 'axios';
 // forzar subida
 
-const baseURL = 'https://planilla.interno.com'
+const baseURL = 'http://localhost:4000';
 // const baseURL = import.meta.env.API_BASE_URL || 'https://planilla.interno.com'
 console.log(baseURL);
 
diff --git a/ui/src/main.js b/ui/src/main.js
index cf50243..7977e04 100644
--- a/ui/src/main.js
+++ b/ui/src/main.js
@@ -1,6 +1,7 @@
 import { createApp } from 'vue'
 import { createPinia } from 'pinia'
 import router from './router'
+import { useRealtimeStore } from './stores/useRealtime'
 
 import App from './App.vue'
 import './style.css'          // Tailwind o tus estilos globales
@@ -8,12 +9,14 @@ import './style.css'          // Tailwind o tus estilos globales
 
 // console.log(`API_BASE_URL: ${API_BASE_URL}`);
 
-const app = 
-createApp(App)
+const app = createApp(App)
 
-
-
-app.use(createPinia())
+const pinia = createPinia()
+app.use(pinia)
 app.use(router)
 
+// iniciar suscripción SSE cuando la app monte
+const realtime = useRealtimeStore(pinia)
+realtime.init()
+
 app.mount('#app')
diff --git a/ui/src/stores/useEmpleados.js b/ui/src/stores/useEmpleados.js
index ab43803..21c9cf6 100644
--- a/ui/src/stores/useEmpleados.js
+++ b/ui/src/stores/useEmpleados.js
@@ -70,16 +70,35 @@ export const useEmpleadosStore = defineStore('empleados', {
       }
     },
 
-    async deleteEmpleado(id) {
-      try {
-        await apiClient.delete(`/api/empleados/${id}`);
-        await this.fetchEmpleados();
-      } catch (error) {
-        console.error(`Error eliminando empleado ${id}:`, error);
-        const errorMsg = error.response?.data?.message || error.message || 'Ocurrió un error.';
-        throw errorMsg;
-      }
-    },
+      async deleteEmpleado(id) {
+        try {
+          await apiClient.delete(`/api/empleados/${id}`);
+          await this.fetchEmpleados();
+        } catch (error) {
+          console.error(`Error eliminando empleado ${id}:`, error);
+
+          const prismaCode = error?.response?.data?.code;
+          const constraint = error?.response?.data?.meta?.constraint;
+
+          if (prismaCode === 'P2003') {
+            if (constraint === 'Planilla_empleado_id_fkey') {
+              throw 'No se puede eliminar: el empleado tiene planillas asociadas.';
+            }
+            if (constraint === 'Asistencia_empleado_id_fkey') {
+              throw 'No se puede eliminar: el empleado tiene asistencias registradas.';
+            }
+            if (constraint === 'TareaRealizada_empleado_id_fkey') {
+              throw 'No se puede eliminar: el empleado tiene tareas registradas.';
+            }
+            // Si no sabemos qué constraint es
+            throw 'No se puede eliminar: el empleado está referenciado en otros datos.';
+          }
+
+          const errorMsg = error.response?.data?.message || error.message || 'Ocurrió un error.';
+          throw errorMsg;
+        }
+      },
+
 
     clearCurrentEmpleado() {
       this.currentEmpleado = getDefaultEmpleado();
diff --git a/ui/src/stores/useRealtime.js b/ui/src/stores/useRealtime.js
new file mode 100644
index 0000000..3922737
--- /dev/null
+++ b/ui/src/stores/useRealtime.js
@@ -0,0 +1,49 @@
+import { defineStore } from 'pinia'
+import { usePlanillasStore } from './usePlanillas'
+import { useEmpleadosStore } from './useEmpleados'
+import { useTareasStore } from './useTareas'
+import { useAsistenciasStore } from './useAsistencias'
+
+export const useRealtimeStore = defineStore('realtime', {
+  state: () => ({
+    _sse: null,
+  }),
+  actions: {
+    init() {
+      if (this._sse) return;
+
+      const eventosURL = import.meta.env.VITE_API_EVENTS_URL || '/events';
+      this._sse = new EventSource(eventosURL);
+
+      this._sse.onopen = () => {
+        console.log('🟢 Conexión SSE establecida correctamente');
+      };
+
+      this._sse.onmessage = (e) => {
+        try {
+          const payload = JSON.parse(e.data);
+          switch (payload.table) {
+            case 'Planilla':
+              usePlanillasStore().fetchPlanillas();
+              break;
+            case 'Cliente':
+              useEmpleadosStore().fetchEmpleados();
+              break;
+            case 'TareaRealizada':
+              useTareasStore().fetchTareas();
+              break;
+            case 'Asistencia':
+              useAsistenciasStore().fetchAsistencias();
+              break;
+          }
+        } catch (err) {
+          console.error('Error procesando SSE', err);
+        }
+      };
+
+      this._sse.onerror = () => {
+        console.warn('SSE connection lost, reloading...');
+      };
+    }
+  },
+})