diff --git a/app/build.gradle b/app/build.gradle
index 0b6dd1f2e..99a9136bf 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -112,7 +112,7 @@ final SUPPORT_VERSION = '28.0.0'
 final ROOM_VERSION = '1.1.1'
 final STETHO_VERSION = '1.5.0'
 final TESTING_SUPPORT_VERSION = '1.0.0'
-final WORK_VERSION = '1.0.0-alpha06'
+final WORK_VERSION = '1.0.0-alpha10'
 final LEAKCANARY_VERSION = '1.6.1'
 
 dependencies {
@@ -169,9 +169,15 @@ dependencies {
     implementation 'com.google.apis:google-api-services-tasks:v1-rev52-1.23.0'
     implementation 'com.google.api-client:google-api-client-android:1.23.0'
     implementation 'com.android.billingclient:billing:1.1'
-    implementation "android.arch.work:work-runtime:${WORK_VERSION}"
+    implementation("android.arch.work:work-runtime:${WORK_VERSION}") {
+        // https://groups.google.com/forum/#!topic/guava-announce/Km82fZG68Sw
+        exclude group: 'com.google.guava', module: 'listenablefuture'
+    }
 
-    googleplayImplementation "android.arch.work:work-firebase:${WORK_VERSION}"
+    googleplayImplementation("android.arch.work:work-firebase:${WORK_VERSION}") {
+        // https://groups.google.com/forum/#!topic/guava-announce/Km82fZG68Sw
+        exclude group: 'com.google.guava', module: 'listenablefuture'
+    }
     googleplayImplementation 'com.crashlytics.sdk.android:crashlytics:2.9.5'
     googleplayImplementation "com.google.firebase:firebase-core:16.0.4"
     googleplayImplementation "com.google.android.gms:play-services-location:16.0.0"
diff --git a/app/src/androidTest/java/org/tasks/jobs/BackupServiceTests.java b/app/src/androidTest/java/org/tasks/jobs/BackupServiceTests.java
index 94bd0e2ae..8c52c527a 100644
--- a/app/src/androidTest/java/org/tasks/jobs/BackupServiceTests.java
+++ b/app/src/androidTest/java/org/tasks/jobs/BackupServiceTests.java
@@ -10,7 +10,6 @@ import static junit.framework.Assert.assertEquals;
 import static junit.framework.Assert.assertTrue;
 
 import android.support.test.runner.AndroidJUnit4;
-import com.todoroo.andlib.utility.AndroidUtilities;
 import com.todoroo.astrid.dao.TaskDao;
 import com.todoroo.astrid.data.Task;
 import java.io.File;
@@ -21,6 +20,7 @@ import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.tasks.R;
 import org.tasks.backup.TasksJsonExporter;
+import org.tasks.backup.TasksJsonExporter.ExportType;
 import org.tasks.injection.InjectingTestCase;
 import org.tasks.injection.TestComponent;
 import org.tasks.preferences.Preferences;
@@ -28,7 +28,6 @@ import org.tasks.preferences.Preferences;
 @RunWith(AndroidJUnit4.class)
 public class BackupServiceTests extends InjectingTestCase {
 
-  private static final long BACKUP_WAIT_TIME = 500L;
   @Inject TasksJsonExporter jsonExporter;
   @Inject TaskDao taskDao;
   @Inject Preferences preferences;
@@ -80,11 +79,7 @@ public class BackupServiceTests extends InjectingTestCase {
   public void testBackup() {
     assertEquals(0, temporaryDirectory.list().length);
 
-    // create a backup
-    BackupWork service = new BackupWork(getTargetContext(), jsonExporter, preferences);
-    service.startBackup(getTargetContext());
-
-    AndroidUtilities.sleepDeep(BACKUP_WAIT_TIME);
+    jsonExporter.exportTasks(getTargetContext(), ExportType.EXPORT_TYPE_SERVICE, null);
 
     // assert file created
     File[] files = temporaryDirectory.listFiles();
diff --git a/app/src/main/java/org/tasks/backup/TasksJsonExporter.java b/app/src/main/java/org/tasks/backup/TasksJsonExporter.java
index 60435ee9a..26fb59bd3 100755
--- a/app/src/main/java/org/tasks/backup/TasksJsonExporter.java
+++ b/app/src/main/java/org/tasks/backup/TasksJsonExporter.java
@@ -118,36 +118,39 @@ public class TasksJsonExporter {
     this.latestSetVersionName = null;
     this.progressDialog = progressDialog;
 
-    handler = exportType == ExportType.EXPORT_TYPE_MANUAL ? new Handler() : null;
+    if (exportType == ExportType.EXPORT_TYPE_MANUAL) {
+      handler = new Handler();
+      new Thread(() -> runBackup(exportType)).start();
+    } else {
+      runBackup(exportType);
+    }
+  }
 
-    new Thread(
-            () -> {
-              try {
-                String output = setupFile(backupDirectory, exportType);
+  private void runBackup(ExportType exportType) {
+    try {
+      String output = setupFile(backupDirectory, exportType);
 
-                List<Task> tasks = taskDao.getAll();
+      List<Task> tasks = taskDao.getAll();
 
-                if (tasks.size() > 0) {
-                  doTasksExport(output, tasks);
-                }
+      if (tasks.size() > 0) {
+        doTasksExport(output, tasks);
+      }
 
-                if (exportType == ExportType.EXPORT_TYPE_MANUAL) {
-                  onFinishExport(output);
-                }
-              } catch (IOException e) {
-                Timber.e(e);
-              } finally {
-                post(
-                    () -> {
-                      if (progressDialog != null
-                          && progressDialog.isShowing()
-                          && context instanceof Activity) {
-                        DialogUtilities.dismissDialog((Activity) context, progressDialog);
-                      }
-                    });
-              }
-            })
-        .start();
+      if (exportType == ExportType.EXPORT_TYPE_MANUAL) {
+        onFinishExport(output);
+      }
+    } catch (IOException e) {
+      Timber.e(e);
+    } finally {
+      post(
+          () -> {
+            if (progressDialog != null
+                && progressDialog.isShowing()
+                && context instanceof Activity) {
+              DialogUtilities.dismissDialog((Activity) context, progressDialog);
+            }
+          });
+    }
   }
 
   private void doTasksExport(String output, List<Task> tasks) throws IOException {
diff --git a/app/src/main/java/org/tasks/injection/InjectingWorker.java b/app/src/main/java/org/tasks/injection/InjectingWorker.java
index ca5bc1061..b2e37ba40 100644
--- a/app/src/main/java/org/tasks/injection/InjectingWorker.java
+++ b/app/src/main/java/org/tasks/injection/InjectingWorker.java
@@ -1,7 +1,9 @@
 package org.tasks.injection;
 
+import android.content.Context;
 import android.support.annotation.NonNull;
 import androidx.work.Worker;
+import androidx.work.WorkerParameters;
 import javax.inject.Inject;
 import org.tasks.analytics.Tracker;
 import timber.log.Timber;
@@ -10,6 +12,10 @@ public abstract class InjectingWorker extends Worker {
 
   @Inject Tracker tracker;
 
+  public InjectingWorker(@NonNull Context context, @NonNull WorkerParameters workerParams) {
+    super(context, workerParams);
+  }
+
   @NonNull
   @Override
   public Result doWork() {
diff --git a/app/src/main/java/org/tasks/jobs/BackupWork.java b/app/src/main/java/org/tasks/jobs/BackupWork.java
index a1343a6b5..a075acc61 100644
--- a/app/src/main/java/org/tasks/jobs/BackupWork.java
+++ b/app/src/main/java/org/tasks/jobs/BackupWork.java
@@ -6,6 +6,8 @@ import static com.todoroo.andlib.utility.DateUtilities.now;
 import static java.util.Collections.emptyList;
 
 import android.content.Context;
+import android.support.annotation.NonNull;
+import androidx.work.WorkerParameters;
 import java.io.File;
 import java.io.FileFilter;
 import java.util.Arrays;
@@ -33,13 +35,8 @@ public class BackupWork extends RepeatingWorker {
   @Inject Preferences preferences;
   @Inject WorkManager workManager;
 
-  @SuppressWarnings("unused")
-  public BackupWork() {}
-
-  BackupWork(Context context, TasksJsonExporter tasksJsonExporter, Preferences preferences) {
-    this.context = context;
-    this.tasksJsonExporter = tasksJsonExporter;
-    this.preferences = preferences;
+  public BackupWork(@NonNull Context context, @NonNull WorkerParameters workerParams) {
+    super(context, workerParams);
   }
 
   @Override
diff --git a/app/src/main/java/org/tasks/jobs/CleanupWork.java b/app/src/main/java/org/tasks/jobs/CleanupWork.java
index db21eb7ce..6c85a529a 100644
--- a/app/src/main/java/org/tasks/jobs/CleanupWork.java
+++ b/app/src/main/java/org/tasks/jobs/CleanupWork.java
@@ -1,6 +1,8 @@
 package org.tasks.jobs;
 
+import android.content.Context;
 import android.support.annotation.NonNull;
+import androidx.work.WorkerParameters;
 import com.todoroo.astrid.alarms.AlarmService;
 import com.todoroo.astrid.reminders.ReminderService;
 import com.todoroo.astrid.timers.TimerPlugin;
@@ -21,6 +23,10 @@ public class CleanupWork extends InjectingWorker {
   @Inject ReminderService reminderService;
   @Inject AlarmService alarmService;
 
+  public CleanupWork(@NonNull Context context, @NonNull WorkerParameters workerParams) {
+    super(context, workerParams);
+  }
+
   @NonNull
   @Override
   public Result run() {
diff --git a/app/src/main/java/org/tasks/jobs/MidnightRefreshWork.java b/app/src/main/java/org/tasks/jobs/MidnightRefreshWork.java
index 88ce94b03..0311e3766 100644
--- a/app/src/main/java/org/tasks/jobs/MidnightRefreshWork.java
+++ b/app/src/main/java/org/tasks/jobs/MidnightRefreshWork.java
@@ -1,5 +1,8 @@
 package org.tasks.jobs;
 
+import android.content.Context;
+import android.support.annotation.NonNull;
+import androidx.work.WorkerParameters;
 import javax.inject.Inject;
 import org.tasks.LocalBroadcastManager;
 import org.tasks.injection.JobComponent;
@@ -9,6 +12,10 @@ public class MidnightRefreshWork extends RepeatingWorker {
   @Inject WorkManager workManager;
   @Inject LocalBroadcastManager localBroadcastManager;
 
+  public MidnightRefreshWork(@NonNull Context context, @NonNull WorkerParameters workerParams) {
+    super(context, workerParams);
+  }
+
   @Override
   protected Result run() {
     localBroadcastManager.broadcastRefresh();
diff --git a/app/src/main/java/org/tasks/jobs/NotificationWork.java b/app/src/main/java/org/tasks/jobs/NotificationWork.java
index 10b1c7778..9683a1da5 100644
--- a/app/src/main/java/org/tasks/jobs/NotificationWork.java
+++ b/app/src/main/java/org/tasks/jobs/NotificationWork.java
@@ -1,11 +1,12 @@
 package org.tasks.jobs;
 
+import android.content.Context;
 import android.support.annotation.NonNull;
+import androidx.work.WorkerParameters;
 import java.util.List;
 import javax.inject.Inject;
 import org.tasks.BuildConfig;
 import org.tasks.Notifier;
-import org.tasks.injection.InjectingWorker;
 import org.tasks.injection.JobComponent;
 import org.tasks.preferences.Preferences;
 
@@ -15,6 +16,10 @@ public class NotificationWork extends RepeatingWorker {
   @Inject Notifier notifier;
   @Inject NotificationQueue notificationQueue;
 
+  public NotificationWork(@NonNull Context context, @NonNull WorkerParameters workerParams) {
+    super(context, workerParams);
+  }
+
   @NonNull
   @Override
   public Result run() {
diff --git a/app/src/main/java/org/tasks/jobs/RefreshWork.java b/app/src/main/java/org/tasks/jobs/RefreshWork.java
index 30dc51669..879439b7f 100644
--- a/app/src/main/java/org/tasks/jobs/RefreshWork.java
+++ b/app/src/main/java/org/tasks/jobs/RefreshWork.java
@@ -1,9 +1,10 @@
 package org.tasks.jobs;
 
+import android.content.Context;
 import android.support.annotation.NonNull;
+import androidx.work.WorkerParameters;
 import javax.inject.Inject;
 import org.tasks.LocalBroadcastManager;
-import org.tasks.injection.InjectingWorker;
 import org.tasks.injection.JobComponent;
 import org.tasks.scheduling.RefreshScheduler;
 
@@ -12,11 +13,16 @@ public class RefreshWork extends RepeatingWorker {
   @Inject RefreshScheduler refreshScheduler;
   @Inject LocalBroadcastManager localBroadcastManager;
 
+  public RefreshWork(@NonNull Context context,
+      @NonNull WorkerParameters workerParams) {
+    super(context, workerParams);
+  }
+
   @NonNull
   @Override
   public Result run() {
-      localBroadcastManager.broadcastRefresh();
-      return Result.SUCCESS;
+    localBroadcastManager.broadcastRefresh();
+    return Result.SUCCESS;
   }
 
   @Override
diff --git a/app/src/main/java/org/tasks/jobs/RepeatingWorker.java b/app/src/main/java/org/tasks/jobs/RepeatingWorker.java
index af08a0bcf..47a4b0267 100644
--- a/app/src/main/java/org/tasks/jobs/RepeatingWorker.java
+++ b/app/src/main/java/org/tasks/jobs/RepeatingWorker.java
@@ -1,10 +1,16 @@
 package org.tasks.jobs;
 
+import android.content.Context;
 import android.support.annotation.NonNull;
+import androidx.work.WorkerParameters;
 import org.tasks.injection.InjectingWorker;
 
 public abstract class RepeatingWorker extends InjectingWorker {
 
+  public RepeatingWorker(@NonNull Context context, @NonNull WorkerParameters workerParams) {
+    super(context, workerParams);
+  }
+
   @NonNull
   @Override
   public final Result doWork() {
diff --git a/app/src/main/java/org/tasks/jobs/SyncWork.java b/app/src/main/java/org/tasks/jobs/SyncWork.java
index 050623b89..5b95d3cf8 100644
--- a/app/src/main/java/org/tasks/jobs/SyncWork.java
+++ b/app/src/main/java/org/tasks/jobs/SyncWork.java
@@ -1,6 +1,8 @@
 package org.tasks.jobs;
 
+import android.content.Context;
 import android.support.annotation.NonNull;
+import androidx.work.WorkerParameters;
 import javax.inject.Inject;
 import org.tasks.LocalBroadcastManager;
 import org.tasks.caldav.CaldavSynchronizer;
@@ -19,6 +21,10 @@ public class SyncWork extends InjectingWorker {
   @Inject LocalBroadcastManager localBroadcastManager;
   @Inject Preferences preferences;
 
+  public SyncWork(@NonNull Context context, @NonNull WorkerParameters workerParams) {
+    super(context, workerParams);
+  }
+
   @NonNull
   @Override
   public Result run() {