diff --git a/src/Node.Worker.js b/src/Node.Worker.js
index d1bc188..ae972f6 100644
--- a/src/Node.Worker.js
+++ b/src/Node.Worker.js
@@ -14,3 +14,6 @@ export const resourceLimitsImpl = () => worker.resourceLimits
 
 /** @type {(a: object) => () => void} */
 export const markUntransferableImpl = a => () => worker.markAsUntransferable(a)
+
+/** @type {() => unknown} */
+export const workerDataImpl = () => worker.workerData
diff --git a/src/Node.Worker.purs b/src/Node.Worker.purs
index 1b0971c..3c5ce8f 100644
--- a/src/Node.Worker.purs
+++ b/src/Node.Worker.purs
@@ -1,10 +1,13 @@
-module Node.Worker (ResourceLimits, shareEnv, resourceLimits, isMainThread, threadId, markUntransferable) where
+module Node.Worker (ResourceLimits, shareEnv, resourceLimits, isMainThread, threadId, markUntransferable, workerData) where
 
 import Prelude
 
+import Control.Monad.Error.Class (liftEither)
+import Data.Bifunctor (lmap)
 import Data.Either (hush)
 import Data.Maybe (Maybe)
 import Effect (Effect)
+import Effect.Exception (error)
 import Foreign (Foreign)
 import Node.Worker.Serializable (class Serializable, deserialize, serialize)
 
@@ -13,6 +16,10 @@ foreign import isMainThread :: Effect Boolean
 foreign import threadId :: Effect Int
 
 foreign import markUntransferableImpl :: Foreign -> Effect Unit
+foreign import workerDataImpl :: Effect Foreign
+
+workerData :: forall a. Serializable a => Effect a
+workerData = bind workerDataImpl (liftEither <<< lmap error <<< deserialize)
 
 markUntransferable :: forall a. Serializable a => a -> Effect Unit
 markUntransferable = markUntransferableImpl <<< serialize