diff --git a/x-pack/legacy/plugins/index_lifecycle_management/__jest__/components/edit_policy.test.js b/x-pack/legacy/plugins/index_lifecycle_management/__jest__/components/edit_policy.test.js
index 9463eccb93a02..2c0ea7fe699b8 100644
--- a/x-pack/legacy/plugins/index_lifecycle_management/__jest__/components/edit_policy.test.js
+++ b/x-pack/legacy/plugins/index_lifecycle_management/__jest__/components/edit_policy.test.js
@@ -20,8 +20,8 @@ import sinon from 'sinon';
 import { findTestSubject } from '@elastic/eui/lib/test';
 import {
   positiveNumbersAboveZeroErrorMessage,
-  numberRequiredMessage,
   positiveNumberRequiredMessage,
+  numberRequiredMessage,
   maximumAgeRequiredMessage,
   maximumSizeRequiredMessage,
   policyNameRequiredMessage,
@@ -243,17 +243,18 @@ describe('edit policy', () => {
       noRollover(rendered);
       setPolicyName(rendered, 'mypolicy');
       activatePhase(rendered, 'warm');
+      setPhaseAfter(rendered, 'warm', '');
       save(rendered);
       expectedErrorMessages(rendered, [numberRequiredMessage]);
     });
-    test('should show positive number required above zero error when trying to save warm phase with 0 for after', () => {
+    test('should allow 0 for phase timing', () => {
       const rendered = mountWithIntl(component);
       noRollover(rendered);
       setPolicyName(rendered, 'mypolicy');
       activatePhase(rendered, 'warm');
       setPhaseAfter(rendered, 'warm', 0);
       save(rendered);
-      expectedErrorMessages(rendered, [positiveNumbersAboveZeroErrorMessage]);
+      expectedErrorMessages(rendered, []);
     });
     test('should show positive number required error when trying to save warm phase with -1 for after', () => {
       const rendered = mountWithIntl(component);
@@ -383,14 +384,14 @@ describe('edit policy', () => {
     });
   });
   describe('cold phase', () => {
-    test('should show positive number required error when trying to save cold phase with 0 for after', () => {
+    test('should allow 0 for phase timing', () => {
       const rendered = mountWithIntl(component);
       noRollover(rendered);
       setPolicyName(rendered, 'mypolicy');
       activatePhase(rendered, 'cold');
       setPhaseAfter(rendered, 'cold', 0);
       save(rendered);
-      expectedErrorMessages(rendered, [positiveNumbersAboveZeroErrorMessage]);
+      expectedErrorMessages(rendered, []);
     });
     test('should show positive number required error when trying to save cold phase with -1 for after', () => {
       const rendered = mountWithIntl(component);
@@ -464,14 +465,14 @@ describe('edit policy', () => {
     });
   });
   describe('delete phase', () => {
-    test('should show positive number required error when trying to save delete phase with 0 for after', () => {
+    test('should allow 0 for phase timing', () => {
       const rendered = mountWithIntl(component);
       noRollover(rendered);
       setPolicyName(rendered, 'mypolicy');
       activatePhase(rendered, 'delete');
       setPhaseAfter(rendered, 'delete', 0);
       save(rendered);
-      expectedErrorMessages(rendered, [positiveNumbersAboveZeroErrorMessage]);
+      expectedErrorMessages(rendered, []);
     });
     test('should show positive number required error when trying to save delete phase with -1 for after', () => {
       const rendered = mountWithIntl(component);
diff --git a/x-pack/legacy/plugins/index_lifecycle_management/public/sections/edit_policy/components/min_age_input.js b/x-pack/legacy/plugins/index_lifecycle_management/public/sections/edit_policy/components/min_age_input.js
index 0ed28bbaa905f..b4c9f4e958cd2 100644
--- a/x-pack/legacy/plugins/index_lifecycle_management/public/sections/edit_policy/components/min_age_input.js
+++ b/x-pack/legacy/plugins/index_lifecycle_management/public/sections/edit_policy/components/min_age_input.js
@@ -131,7 +131,7 @@ export const MinAgeInput = props => {
             onChange={async e => {
               setPhaseData(PHASE_ROLLOVER_MINIMUM_AGE, e.target.value);
             }}
-            min={1}
+            min={0}
           />
         </ErrableFormRow>
       </EuiFlexItem>
diff --git a/x-pack/legacy/plugins/index_lifecycle_management/public/store/defaults/cold_phase.js b/x-pack/legacy/plugins/index_lifecycle_management/public/store/defaults/cold_phase.js
index b0af0e6547803..a8f7fd3f4bdfa 100644
--- a/x-pack/legacy/plugins/index_lifecycle_management/public/store/defaults/cold_phase.js
+++ b/x-pack/legacy/plugins/index_lifecycle_management/public/store/defaults/cold_phase.js
@@ -17,7 +17,7 @@ import {
 export const defaultColdPhase = {
   [PHASE_ENABLED]: false,
   [PHASE_ROLLOVER_ALIAS]: '',
-  [PHASE_ROLLOVER_MINIMUM_AGE]: '',
+  [PHASE_ROLLOVER_MINIMUM_AGE]: 0,
   [PHASE_ROLLOVER_MINIMUM_AGE_UNITS]: 'd',
   [PHASE_NODE_ATTRS]: '',
   [PHASE_REPLICA_COUNT]: '',
diff --git a/x-pack/legacy/plugins/index_lifecycle_management/public/store/defaults/delete_phase.js b/x-pack/legacy/plugins/index_lifecycle_management/public/store/defaults/delete_phase.js
index 5a44539ff90f8..b5296cd83fabd 100644
--- a/x-pack/legacy/plugins/index_lifecycle_management/public/store/defaults/delete_phase.js
+++ b/x-pack/legacy/plugins/index_lifecycle_management/public/store/defaults/delete_phase.js
@@ -15,7 +15,7 @@ export const defaultDeletePhase = {
   [PHASE_ENABLED]: false,
   [PHASE_ROLLOVER_ENABLED]: false,
   [PHASE_ROLLOVER_ALIAS]: '',
-  [PHASE_ROLLOVER_MINIMUM_AGE]: '',
+  [PHASE_ROLLOVER_MINIMUM_AGE]: 0,
   [PHASE_ROLLOVER_MINIMUM_AGE_UNITS]: 'd',
 };
 export const defaultEmptyDeletePhase = defaultDeletePhase;
diff --git a/x-pack/legacy/plugins/index_lifecycle_management/public/store/defaults/warm_phase.js b/x-pack/legacy/plugins/index_lifecycle_management/public/store/defaults/warm_phase.js
index d3dc55178b253..f02ac2096675f 100644
--- a/x-pack/legacy/plugins/index_lifecycle_management/public/store/defaults/warm_phase.js
+++ b/x-pack/legacy/plugins/index_lifecycle_management/public/store/defaults/warm_phase.js
@@ -23,7 +23,7 @@ export const defaultWarmPhase = {
   [PHASE_ROLLOVER_ALIAS]: '',
   [PHASE_FORCE_MERGE_SEGMENTS]: '',
   [PHASE_FORCE_MERGE_ENABLED]: false,
-  [PHASE_ROLLOVER_MINIMUM_AGE]: '',
+  [PHASE_ROLLOVER_MINIMUM_AGE]: 0,
   [PHASE_ROLLOVER_MINIMUM_AGE_UNITS]: 'd',
   [PHASE_NODE_ATTRS]: '',
   [PHASE_SHRINK_ENABLED]: false,
diff --git a/x-pack/legacy/plugins/index_lifecycle_management/public/store/selectors/lifecycle.js b/x-pack/legacy/plugins/index_lifecycle_management/public/store/selectors/lifecycle.js
index 026845c78ee66..750a7feb19c3d 100644
--- a/x-pack/legacy/plugins/index_lifecycle_management/public/store/selectors/lifecycle.js
+++ b/x-pack/legacy/plugins/index_lifecycle_management/public/store/selectors/lifecycle.js
@@ -120,12 +120,6 @@ export const validatePhase = (type, phase, errors) => {
         phaseErrors[numberedAttribute] = [numberRequiredMessage];
       } else if (phase[numberedAttribute] < 0) {
         phaseErrors[numberedAttribute] = [positiveNumberRequiredMessage];
-      } else if (
-        (numberedAttribute === PHASE_ROLLOVER_MINIMUM_AGE ||
-          numberedAttribute === PHASE_PRIMARY_SHARD_COUNT) &&
-        phase[numberedAttribute] < 1
-      ) {
-        phaseErrors[numberedAttribute] = [positiveNumbersAboveZeroErrorMessage];
       }
     }
   }