diff --git a/changes/1545-dcHHH.md b/changes/1545-dcHHH.md
new file mode 100644
index 0000000..a5ccad5
--- /dev/null
+++ b/changes/1545-dcHHH.md
@@ -0,0 +1 @@
+Move the assignment of `field.validate_always` in `fields.py` so the `always` parameter of validators work on inheritance.
diff --git a/pydantic/fields.py b/pydantic/fields.py
index 67a3c13..99289b7 100644
--- a/pydantic/fields.py
+++ b/pydantic/fields.py
@@ -365,10 +365,6 @@ class ModelField(Representation):
             # user will need to call model.update_forward_refs()
             return
 
-        self.validate_always = getattr(self.type_, 'validate_always', False) or any(
-            v.always for v in self.class_validators.values()
-        )
-
         if self.required is False and default_value is None:
             self.allow_none = True
 
@@ -511,6 +507,10 @@ class ModelField(Representation):
         and class validators. This method should be idempotent, e.g. it should be safe to call multiple times
         without mis-configuring the field.
         """
+        self.validate_always = getattr(self.type_, 'validate_always', False) or any(
+            v.always for v in self.class_validators.values()
+        )
+
         class_validators_ = self.class_validators.values()
         if not self.sub_fields or self.shape == SHAPE_GENERIC:
             get_validators = getattr(self.type_, '__get_validators__', None)
diff --git a/tests/test_validators.py b/tests/test_validators.py
index 2ff9359..b50e80d 100644
--- a/tests/test_validators.py
+++ b/tests/test_validators.py
@@ -287,6 +287,25 @@ def test_validate_always():
     assert check_calls == 2
 
 
+def test_validate_always_on_inheritance():
+    check_calls = 0
+
+    class ParentModel(BaseModel):
+        a: str = None
+
+    class Model(ParentModel):
+        @validator('a', pre=True, always=True)
+        def check_a(cls, v):
+            nonlocal check_calls
+            check_calls += 1
+            return v or 'xxx'
+
+    assert Model().a == 'xxx'
+    assert check_calls == 1
+    assert Model(a='y').a == 'y'
+    assert check_calls == 2
+
+
 def test_validate_not_always():
     check_calls = 0