diff --git a/netbox/extras/forms/reports.py b/netbox/extras/forms/reports.py
index 33c51245c..ddea9e93e 100644
--- a/netbox/extras/forms/reports.py
+++ b/netbox/extras/forms/reports.py
@@ -1,4 +1,5 @@
 from django import forms
+from django.utils import timezone
 from django.utils.translation import gettext as _
 
 from utilities.forms import BootstrapMixin, DateTimePicker
@@ -17,6 +18,14 @@ class ReportForm(BootstrapMixin, forms.Form):
     )
     interval = forms.IntegerField(
         required=False,
+        min_value=1,
         label=_("Recurs every"),
         help_text=_("Interval at which this report is re-run (in minutes)")
     )
+
+    def clean_schedule_at(self):
+        scheduled_time = self.cleaned_data['schedule_at']
+        if scheduled_time and scheduled_time < timezone.now():
+            raise forms.ValidationError(_('Scheduled time must be in the future.'))
+
+        return scheduled_time
diff --git a/netbox/extras/forms/scripts.py b/netbox/extras/forms/scripts.py
index 754a3faec..281efc754 100644
--- a/netbox/extras/forms/scripts.py
+++ b/netbox/extras/forms/scripts.py
@@ -1,4 +1,5 @@
 from django import forms
+from django.utils import timezone
 from django.utils.translation import gettext as _
 
 from utilities.forms import BootstrapMixin, DateTimePicker
@@ -23,6 +24,7 @@ class ScriptForm(BootstrapMixin, forms.Form):
     )
     _interval = forms.IntegerField(
         required=False,
+        min_value=1,
         label=_("Recurs every"),
         help_text=_("Interval at which this script is re-run (in minutes)")
     )
@@ -38,6 +40,15 @@ class ScriptForm(BootstrapMixin, forms.Form):
         self.fields['_interval'] = interval
         self.fields['_commit'] = commit
 
+    def clean__schedule_at(self):
+        scheduled_time = self.cleaned_data['_schedule_at']
+        if scheduled_time and scheduled_time < timezone.now():
+            raise forms.ValidationError({
+                '_schedule_at': _('Scheduled time must be in the future.')
+            })
+
+        return scheduled_time
+
     @property
     def requires_input(self):
         """
diff --git a/netbox/extras/migrations/0079_scheduled_jobs.py b/netbox/extras/migrations/0079_scheduled_jobs.py
index d387bd492..f9f8c6357 100644
--- a/netbox/extras/migrations/0079_scheduled_jobs.py
+++ b/netbox/extras/migrations/0079_scheduled_jobs.py
@@ -1,3 +1,4 @@
+import django.core.validators
 from django.db import migrations, models
 
 
@@ -16,7 +17,7 @@ class Migration(migrations.Migration):
         migrations.AddField(
             model_name='jobresult',
             name='interval',
-            field=models.PositiveIntegerField(blank=True, null=True),
+            field=models.PositiveIntegerField(blank=True, null=True, validators=[django.core.validators.MinValueValidator(1)]),
         ),
         migrations.AddField(
             model_name='jobresult',
diff --git a/netbox/extras/models/models.py b/netbox/extras/models/models.py
index ce700fedc..6a60458e2 100644
--- a/netbox/extras/models/models.py
+++ b/netbox/extras/models/models.py
@@ -7,7 +7,7 @@ from django.contrib.auth.models import User
 from django.contrib.contenttypes.fields import GenericForeignKey
 from django.contrib.contenttypes.models import ContentType
 from django.core.cache import cache
-from django.core.validators import ValidationError
+from django.core.validators import MinValueValidator, ValidationError
 from django.db import models
 from django.http import HttpResponse, QueryDict
 from django.urls import reverse
@@ -590,6 +590,9 @@ class JobResult(models.Model):
     interval = models.PositiveIntegerField(
         blank=True,
         null=True,
+        validators=(
+            MinValueValidator(1),
+        ),
         help_text=_("Recurrence interval (in minutes)")
     )
     started = models.DateTimeField(