diff --git a/modules/worker/back/methods/worker/chooseLocker.js b/modules/worker/back/methods/worker/chooseLocker.js
new file mode 100644
index 000000000..b3b7678ca
--- /dev/null
+++ b/modules/worker/back/methods/worker/chooseLocker.js
@@ -0,0 +1,32 @@
+
+module.exports = Self => {
+    Self.remoteMethod('chooseLocker', {
+        description: 'Returns an unoccupied locker for the employee',
+        accessType: 'WRITE',
+        accepts: [{
+            arg: 'filter',
+            type: 'Object',
+            description: 'Filter defining where and paginated data',
+            required: true
+        }],
+        returns: {
+            type: ['object'],
+            root: true
+        },
+        http: {
+            path: `/chooseLocker`,
+            verb: 'GET'
+        }
+    });
+
+    Self.chooseLocker = async filter => {
+        const query =
+            `SELECT l.code AS locker_code
+            FROM worker w
+            JOIN locker l ON w.sex = l.gender
+            WHERE w.id = ? AND l.workerFk IS NULL;
+            `[this.worker.id];
+
+        return Self.chooseLocker(query, filter);
+    };
+};
diff --git a/modules/worker/back/models/locker.js b/modules/worker/back/models/locker.js
new file mode 100644
index 000000000..25b33f517
--- /dev/null
+++ b/modules/worker/back/models/locker.js
@@ -0,0 +1,7 @@
+module.exports = Self => {
+    require('../methods/worker/chooseLocker')(Self);
+
+    Self.validatesUniquenessOf('locker', {
+        message: 'This locker has already been assigned'
+    });
+};