diff --git a/src/Illuminate/Queue/Console/WorkCommand.php b/src/Illuminate/Queue/Console/WorkCommand.php
index 69b248d2b129..7785ec3cb615 100644
--- a/src/Illuminate/Queue/Console/WorkCommand.php
+++ b/src/Illuminate/Queue/Console/WorkCommand.php
@@ -115,7 +115,7 @@ public function handle()
         // connection being run for the queue operation currently being executed.
         $queue = $this->getQueue($connection);
 
-        if (! $this->hasOption('json') && Terminal::hasSttyAvailable()) {
+        if (! $this->outputUsingJson() && Terminal::hasSttyAvailable()) {
             $this->components->info(
                 sprintf('Processing jobs from the [%s] %s.', $queue, str('queue')->plural(explode(',', $queue)))
             );
@@ -201,7 +201,7 @@ protected function listenForEvents()
      */
     protected function writeOutput(Job $job, $status, Throwable $exception = null)
     {
-        $this->hasOption('json')
+        $this->outputUsingJson()
             ? $this->writeOutputAsJson($job, $status, $exception)
             : $this->writeOutputForCli($job, $status);
     }
@@ -346,4 +346,18 @@ protected function downForMaintenance()
     {
         return $this->option('force') ? false : $this->laravel->isDownForMaintenance();
     }
+
+    /**
+     * Determine if the worker should output using JSON.
+     *
+     * @return bool
+     */
+    protected function outputUsingJson()
+    {
+        if (! $this->hasOption('json')) {
+            return false;
+        }
+
+        return $this->option('json');
+    }
 }
diff --git a/src/Illuminate/Support/ServiceProvider.php b/src/Illuminate/Support/ServiceProvider.php
index 3edda126ed2a..466ece11c004 100755
--- a/src/Illuminate/Support/ServiceProvider.php
+++ b/src/Illuminate/Support/ServiceProvider.php
@@ -477,12 +477,12 @@ public function commands($commands)
     /**
      * Register commands that should run on "optimize" or "optimize:clear".
      *
-     * @param  string  $optimize
-     * @param  string  $clear
+     * @param  string|null  $optimize
+     * @param  string|null  $clear
      * @param  string|null  $key
      * @return void
      */
-    protected function optimizes(string $optimize = null, string $clear = null, ?string $key = null)
+    protected function optimizes(?string $optimize = null, ?string $clear = null, ?string $key = null)
     {
         $key ??= (string) Str::of(get_class($this))
             ->classBasename()