diff --git a/back/methods/workerActivity/add.js b/back/methods/workerActivity/add.js
new file mode 100644
index 000000000..4592a0797
--- /dev/null
+++ b/back/methods/workerActivity/add.js
@@ -0,0 +1,50 @@
+module.exports = Self => {
+    Self.remoteMethodCtx('add', {
+        description: 'Add activity if the activity is different or is the same but have exceed time for break',
+        accessType: 'WRITE',
+        accepts: [
+            {
+                arg: 'code',
+                type: 'string',
+                description: 'Code for activity'
+            },
+            {
+                arg: 'model',
+                type: 'string',
+                description: 'Origin model from insert'
+            },
+
+        ],
+        http: {
+            path: `/add`,
+            verb: 'POST'
+        }
+    });
+
+    Self.add = async(ctx, code, model, options) => {
+        const userId = ctx.req.accessToken.userId;
+        const myOptions = {};
+
+        if (typeof options == 'object')
+            Object.assign(myOptions, options);
+
+        return await Self.rawSql(`
+            INSERT INTO workerActivity (workerFk, workerActivityTypeFk, model)
+                SELECT ?, ?, ?
+                    FROM workerTimeControlParams wtcp
+                        LEFT JOIN (
+                            SELECT wa.workerFk,
+                                wa.created,
+                                wat.code
+                            FROM workerActivity wa
+                                LEFT JOIN workerActivityType wat ON wat.code = wa.workerActivityTypeFk
+                            WHERE wa.workerFk = ?
+                            ORDER BY wa.created DESC
+                            LIMIT 1
+                        ) sub ON TRUE
+                    WHERE sub.workerFk IS NULL
+                        OR sub.code <> ? 
+                        OR TIMESTAMPDIFF(SECOND, sub.created, util.VN_NOW()) > wtcp.dayBreak;`
+        , [userId, code, model, userId, code], myOptions);
+    };
+};
diff --git a/back/methods/workerActivity/specs/add.spec.js b/back/methods/workerActivity/specs/add.spec.js
new file mode 100644
index 000000000..352d67723
--- /dev/null
+++ b/back/methods/workerActivity/specs/add.spec.js
@@ -0,0 +1,30 @@
+const {models} = require('vn-loopback');
+
+describe('workerActivity insert()', () => {
+    const ctx = beforeAll.getCtx(1106);
+
+    it('should insert in workerActivity', async() => {
+        const tx = await models.WorkerActivity.beginTransaction({});
+        let count = 0;
+        const options = {transaction: tx};
+
+        try {
+            await models.WorkerActivityType.create(
+                {'code': 'STOP', 'description': 'STOP'}, options
+            );
+
+            await models.WorkerActivity.add(ctx, 'STOP', 'APP', options);
+
+            count = await models.WorkerActivity.count(
+                {'workerFK': 1106}, options
+            );
+
+            await tx.rollback();
+        } catch (e) {
+            await tx.rollback();
+            throw e;
+        }
+
+        expect(count).toEqual(1);
+    });
+});
diff --git a/back/models/workerActivity.js b/back/models/workerActivity.js
new file mode 100644
index 000000000..b3bb2c160
--- /dev/null
+++ b/back/models/workerActivity.js
@@ -0,0 +1,3 @@
+module.exports = Self => {
+    require('../methods/workerActivity/add')(Self);
+};
diff --git a/back/models/workerActivity.json b/back/models/workerActivity.json
index e3b994f77..ecd92bbce 100644
--- a/back/models/workerActivity.json
+++ b/back/models/workerActivity.json
@@ -22,18 +22,18 @@
 		},
 		"description": {
 			"type": "string"
+		}
+	},
+	"relations": {
+		"workerFk": {
+			"type": "belongsTo",
+			"model": "Worker",
+			"foreignKey": "workerFk"
 		},
-		"relations": {
-			"workerFk": {
-				"type": "belongsTo",
-				"model": "Worker",
-				"foreignKey": "workerFk"
-			},
-			"workerActivityTypeFk": {
-				"type": "belongsTo",
-				"model": "WorkerActivityType",
-				"foreignKey": "workerActivityTypeFk"
-			}
+		"workerActivityTypeFk": {
+			"type": "belongsTo",
+			"model": "WorkerActivityType",
+			"foreignKey": "workerActivityTypeFk"
 		}
 	}
 }
\ No newline at end of file