diff --git a/docs/_data/navigation.yml b/docs/_data/navigation.yml
index 096c1d83..d93dad60 100644
--- a/docs/_data/navigation.yml
+++ b/docs/_data/navigation.yml
@@ -43,6 +43,8 @@
       url: "/housekeeping-git-requests"
     - title: "API Requests"
       url: "/housekeeping-api-requests"
+    - title: "Abandoned Organizations"
+      url: "/housekeeping-abandoned-orgs"
     - title: "Forks"
       url: "/housekeeping-forks"
 - title: "Recommendations"
diff --git a/docs/demo-data/organizations-abandoned-detailed.tsv b/docs/demo-data/organizations-abandoned-detailed.tsv
new file mode 100644
index 00000000..b4600b38
--- /dev/null
+++ b/docs/demo-data/organizations-abandoned-detailed.tsv
@@ -0,0 +1,4 @@
+organization    last push
+old-org 2015-03-31
+very-old-org    2015-08-19
+granpa-org  2016-01-08
diff --git a/docs/demo-data/organizations-abandoned.tsv b/docs/demo-data/organizations-abandoned.tsv
new file mode 100644
index 00000000..0f4ef555
--- /dev/null
+++ b/docs/demo-data/organizations-abandoned.tsv
@@ -0,0 +1,4 @@
+date	abandoned organizations
+2018-01-25	84
+2018-01-24	90
+2018-01-23	92
diff --git a/docs/housekeeping-abandoned-orgs.html b/docs/housekeeping-abandoned-orgs.html
new file mode 100644
index 00000000..d2e7999c
--- /dev/null
+++ b/docs/housekeeping-abandoned-orgs.html
@@ -0,0 +1,26 @@
+---
+layout: default
+title: Forks
+permalink: /housekeeping-abandoned-orgs
+---
+
+<div class="chart-placeholder">
+	<h3>Abandoned Organizations</h3>
+	<canvas
+		data-url="{{ site.dataURL }}/organizations-abandoned.tsv"
+		data-type="history"
+	></canvas>
+	<div class="info-box">
+		<p>
+			An organizations is considered <em>abandoned</em> if none of its repositories has received a push in the last year (ignoring <a href="https://help.github.com/articles/archiving-repositories/">archived</a> repositories).
+		</p>
+		<p>
+			If the content still has value, then you could <a href="https://help.github.com/articles/archiving-repositories/">archive</a> all repositories in these organizations to emphasize the fact that they are not maintained anymore.
+			If the content is not valuable anymore, then you could <a href="https://help.github.com/articles/deleting-an-organization-account/">delete the organization</a> to reduce clutter on your GitHub Enterprise appliance.
+		</p>
+	</div>
+</div>
+
+<div class="chart-placeholder">
+	<table data-url="{{ site.dataURL }}/organizations-abandoned-detailed.tsv"></table>
+</div>
diff --git a/updater/reports/ReportOrgsAbandoned.py b/updater/reports/ReportOrgsAbandoned.py
new file mode 100644
index 00000000..a8476f13
--- /dev/null
+++ b/updater/reports/ReportOrgsAbandoned.py
@@ -0,0 +1,38 @@
+from .ReportDaily import *
+
+# Find the organizations that have not received a push for the longest time.
+# Only look at organizations that have not received a push for at least one
+# year. Only look at repositories that are still maintained (not archived!).
+class ReportOrgsAbandoned(ReportDaily):
+	def name(self):
+		return "organizations-abandoned"
+
+	def updateDailyData(self):
+		self.detailedHeader, self.detailedData = self.parseData(self.executeQuery(self.query()))
+		if len(self.data) == 0:
+			self.header = ["date", "abandoned organizations"]
+		self.data.append([str(self.yesterday()), len(self.detailedData)])
+		self.truncateData(self.timeRangeTotal())
+		self.sortDataByDate()
+
+	def query(self):
+		query = '''
+			SELECT
+				users.login AS "organization",
+				DATE(MAX(pushes.created_at)) AS "last push"
+			FROM
+				repositories
+				JOIN users ON repositories.owner_id = users.id
+				JOIN pushes ON pushes.repository_id = repositories.id
+			WHERE
+				users.type = "organization"
+				AND repositories.maintained = 1 ''' + \
+				self.andExcludedEntities("users.login") + '''
+			GROUP BY
+				users.id
+			HAVING
+				CAST(MAX(pushes.created_at) AS DATE) < "''' + str(self.daysAgo(365)) + '''"
+			ORDER BY
+				MAX(pushes.created_at)
+		'''
+		return query
diff --git a/updater/update-stats.py b/updater/update-stats.py
index 1b1c65df..67beffa8 100755
--- a/updater/update-stats.py
+++ b/updater/update-stats.py
@@ -16,6 +16,7 @@
 from reports.ReportOrgActivity import *
 from reports.ReportOrgCollaboration import *
 from reports.ReportOrgOwners import *
+from reports.ReportOrgsAbandoned import *
 from reports.ReportOrgsTotal import *
 from reports.ReportPRByOrg import *
 from reports.ReportPRByRepo import *
@@ -86,6 +87,7 @@ def main():
 	ReportOrgActivity(configuration, dataDirectory, metaStats).update()
 	ReportOrgCollaboration(configuration, dataDirectory, metaStats).update()
 	ReportOrgOwners(configuration, dataDirectory, metaStats).update()
+	ReportOrgsAbandoned(configuration, dataDirectory, metaStats).update()
 	ReportOrgsTotal(configuration, dataDirectory, metaStats).update()
 	ReportPRByOrg(configuration, dataDirectory, metaStats).update()
 	ReportPRByRepo(configuration, dataDirectory, metaStats).update()