diff --git a/lib/uh/wm/env.rb b/lib/uh/wm/env.rb
index 86454fb..7417647 100644
--- a/lib/uh/wm/env.rb
+++ b/lib/uh/wm/env.rb
@@ -3,10 +3,11 @@ module Uh
     class Env
       RC_PATH = '~/.uhwmrc.rb'.freeze
 
-      MODIFIER = :mod1
-      KEYBINDS = {
+      MODIFIER  = :mod1
+      KEYBINDS  = {
         q: proc { quit }
       }.freeze
+      WORKER    = :block
 
       LOGGER_LEVEL          = Logger::WARN
       LOGGER_LEVEL_VERBOSE  = Logger::INFO
@@ -28,6 +29,7 @@ module Uh
         @rc_path  = RC_PATH
         @modifier = MODIFIER
         @keybinds = KEYBINDS.dup
+        @worker   = :block
       end
 
       def verbose?
diff --git a/spec/uh/wm/env_spec.rb b/spec/uh/wm/env_spec.rb
index 1d157dd..03336a6 100644
--- a/spec/uh/wm/env_spec.rb
+++ b/spec/uh/wm/env_spec.rb
@@ -29,6 +29,10 @@ module Uh
         expect(env.keybinds.keys).to eq %i[q]
       end
 
+      it 'has the blocking worker by default' do
+        expect(env.worker).to eq :block
+      end
+
       describe '#verbose?' do
         context 'when verbose mode is disabled' do
           before { env.verbose = false }