diff --git a/app/src/main/java/info/nightscout/androidaps/activities/fragments/TreatmentsUserEntryFragment.kt b/app/src/main/java/info/nightscout/androidaps/activities/fragments/TreatmentsUserEntryFragment.kt
index b0ca06cfdd..e5c6b95ad7 100644
--- a/app/src/main/java/info/nightscout/androidaps/activities/fragments/TreatmentsUserEntryFragment.kt
+++ b/app/src/main/java/info/nightscout/androidaps/activities/fragments/TreatmentsUserEntryFragment.kt
@@ -68,7 +68,7 @@ class TreatmentsUserEntryFragment : DaggerFragment() {
             activity?.let { activity ->
                 OKDialog.showConfirmation(activity, resourceHelper.gs(R.string.ue_export_to_csv) + "?") {
                     uel.log(Action.EXPORT_CSV, Sources.Treatments)
-                    importExportPrefs.exportUserEntriesCsv(activity)
+                    importExportPrefs.exportUserEntriesCsv()
                 }
             }
         }
diff --git a/app/src/main/java/info/nightscout/androidaps/dependencyInjection/WorkersModule.kt b/app/src/main/java/info/nightscout/androidaps/dependencyInjection/WorkersModule.kt
index 5d3f33d2d9..a4ef80ab81 100644
--- a/app/src/main/java/info/nightscout/androidaps/dependencyInjection/WorkersModule.kt
+++ b/app/src/main/java/info/nightscout/androidaps/dependencyInjection/WorkersModule.kt
@@ -3,6 +3,7 @@ package info.nightscout.androidaps.dependencyInjection
 import dagger.Module
 import dagger.android.ContributesAndroidInjector
 import info.nightscout.androidaps.plugins.general.food.FoodPlugin
+import info.nightscout.androidaps.plugins.general.maintenance.ImportExportPrefsImpl
 import info.nightscout.androidaps.plugins.general.nsclient.NSClientAddAckWorker
 import info.nightscout.androidaps.plugins.general.nsclient.NSClientAddUpdateWorker
 import info.nightscout.androidaps.plugins.general.nsclient.NSClientMbgWorker
@@ -30,4 +31,5 @@ abstract class WorkersModule {
     @ContributesAndroidInjector abstract fun contributesNSClientUpdateRemoveAckWorker(): NSClientUpdateRemoveAckWorker
     @ContributesAndroidInjector abstract fun contributesNSClientMbgWorker(): NSClientMbgWorker
     @ContributesAndroidInjector abstract fun contributesFoodWorker(): FoodPlugin.FoodWorker
+    @ContributesAndroidInjector abstract fun contributesCsvExportWorker(): ImportExportPrefsImpl.CsvExportWorker
 }
\ No newline at end of file
diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/general/maintenance/ImportExportPrefsImpl.kt b/app/src/main/java/info/nightscout/androidaps/plugins/general/maintenance/ImportExportPrefsImpl.kt
index 90a3edba81..1f48ba24b7 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/general/maintenance/ImportExportPrefsImpl.kt
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/general/maintenance/ImportExportPrefsImpl.kt
@@ -11,7 +11,13 @@ import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.ContextCompat
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentActivity
+import androidx.work.OneTimeWorkRequest
+import androidx.work.Worker
+import androidx.work.WorkerParameters
+import androidx.work.workDataOf
+import dagger.android.HasAndroidInjector
 import info.nightscout.androidaps.BuildConfig
+import info.nightscout.androidaps.MainApp
 import info.nightscout.androidaps.R
 import info.nightscout.androidaps.activities.DaggerAppCompatActivityWithResult
 import info.nightscout.androidaps.activities.PreferencesActivity
@@ -26,6 +32,7 @@ import info.nightscout.androidaps.logging.LTag
 import info.nightscout.androidaps.logging.UserEntryLogger
 import info.nightscout.androidaps.plugins.bus.RxBus
 import info.nightscout.androidaps.plugins.general.maintenance.formats.*
+import info.nightscout.androidaps.receivers.DataWorker
 import info.nightscout.androidaps.utils.AndroidPermission
 import info.nightscout.androidaps.utils.DateUtil
 import info.nightscout.androidaps.utils.MidnightTime
@@ -64,7 +71,7 @@ class ImportExportPrefsImpl @Inject constructor(
     private val encryptedPrefsFormat: EncryptedPrefsFormat,
     private val prefFileList: PrefFileListProvider,
     private val uel: UserEntryLogger,
-    private val repository: AppRepository,
+    private val dataWorker: DataWorker,
     private val dateUtil: DateUtil
 ) : ImportExportPrefs {
 
@@ -362,20 +369,48 @@ class ImportExportPrefsImpl @Inject constructor(
         }
     }
 
-    override fun exportUserEntriesCsv(activity: FragmentActivity) {
-        val entries = repository.getUserEntryFilteredDataFromTime(MidnightTime.calc() - T.days(90).msecs()).blockingGet()
-        prefFileList.ensureExportDirExists()
-        val newFile = prefFileList.newExportCsvFile()
+    override fun exportUserEntriesCsv() {
+        dataWorker.enqueue(
+            OneTimeWorkRequest.Builder(CsvExportWorker::class.java)
+                .build()
+        )
+    }
 
-        try {
-            classicPrefsFormat.saveCsv(newFile, entries)
-            ToastUtils.okToast(activity, resourceHelper.gs(R.string.ue_exported))
-        } catch (e: FileNotFoundException) {
-            ToastUtils.errorToast(activity, resourceHelper.gs(R.string.filenotfound) + " " + newFile)
-            log.error(LTag.CORE, "Unhandled exception", e)
-        } catch (e: IOException) {
-            ToastUtils.errorToast(activity, e.message)
-            log.error(LTag.CORE, "Unhandled exception", e)
+    class CsvExportWorker(
+        context: Context,
+        params: WorkerParameters
+    ) : Worker(context, params) {
+
+        @Inject lateinit var injector: HasAndroidInjector
+        @Inject lateinit var aapsLogger: AAPSLogger
+        @Inject lateinit var repository: AppRepository
+        @Inject lateinit var classicPrefsFormat: ClassicPrefsFormat
+        @Inject lateinit var resourceHelper: ResourceHelper
+        @Inject lateinit var prefFileList: PrefFileListProvider
+        @Inject lateinit var mainApp: MainApp
+
+        init {
+            (context.applicationContext as HasAndroidInjector).androidInjector().inject(this)
+        }
+
+        override fun doWork(): Result {
+            val entries = repository.getUserEntryFilteredDataFromTime(MidnightTime.calc() - T.days(90).msecs()).blockingGet()
+            prefFileList.ensureExportDirExists()
+            val newFile = prefFileList.newExportCsvFile()
+            var ret = Result.success()
+            try {
+                classicPrefsFormat.saveCsv(newFile, entries)
+                ToastUtils.okToast(mainApp, resourceHelper.gs(R.string.ue_exported))
+            } catch (e: FileNotFoundException) {
+                ToastUtils.errorToast(mainApp, resourceHelper.gs(R.string.filenotfound) + " " + newFile)
+                aapsLogger.error(LTag.CORE, "Unhandled exception", e)
+                ret = Result.failure(workDataOf("Error" to "Error FileNotFoundException"))
+            } catch (e: IOException) {
+                ToastUtils.errorToast(mainApp, e.message)
+                aapsLogger.error(LTag.CORE, "Unhandled exception", e)
+                ret = Result.failure(workDataOf("Error" to "Error IOException"))
+            }
+            return ret
         }
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/info/nightscout/androidaps/plugins/general/maintenance/MaintenanceFragment.kt b/app/src/main/java/info/nightscout/androidaps/plugins/general/maintenance/MaintenanceFragment.kt
index 064c3c0998..a6a1c2bf85 100644
--- a/app/src/main/java/info/nightscout/androidaps/plugins/general/maintenance/MaintenanceFragment.kt
+++ b/app/src/main/java/info/nightscout/androidaps/plugins/general/maintenance/MaintenanceFragment.kt
@@ -118,7 +118,7 @@ class MaintenanceFragment : DaggerFragment() {
             activity?.let { activity ->
                 OKDialog.showConfirmation(activity, resourceHelper.gs(R.string.ue_export_to_csv) + "?") {
                     uel.log(Action.EXPORT_CSV, Sources.Maintenance)
-                    importExportPrefs.exportUserEntriesCsv(activity)
+                    importExportPrefs.exportUserEntriesCsv()
                 }
             }
         }
diff --git a/core/src/main/java/info/nightscout/androidaps/interfaces/ImportExportPrefs.kt b/core/src/main/java/info/nightscout/androidaps/interfaces/ImportExportPrefs.kt
index 95dbb3467f..ef5589c322 100644
--- a/core/src/main/java/info/nightscout/androidaps/interfaces/ImportExportPrefs.kt
+++ b/core/src/main/java/info/nightscout/androidaps/interfaces/ImportExportPrefs.kt
@@ -14,5 +14,5 @@ interface ImportExportPrefs {
     fun prefsFileExists(): Boolean
     fun verifyStoragePermissions(fragment: Fragment, onGranted: Runnable)
     fun exportSharedPreferences(f: Fragment)
-    fun exportUserEntriesCsv(activity: FragmentActivity)
+    fun exportUserEntriesCsv()
 }
\ No newline at end of file