diff --git a/backend.native/tests/build.gradle b/backend.native/tests/build.gradle
index e1d2d02c277..9141d72f6d6 100644
--- a/backend.native/tests/build.gradle
+++ b/backend.native/tests/build.gradle
@@ -564,6 +564,30 @@ task worker3(type: RunKonanTest) {
     source = "runtime/workers/worker3.kt"
 }
 
+task worker4(type: RunKonanTest) {
+    disabled = (project.testTarget == 'wasm32') // Workers need pthreads.
+    goldValue = "Got 42\nOK\n"
+    source = "runtime/workers/worker4.kt"
+}
+
+task worker5(type: RunKonanTest) {
+    disabled = (project.testTarget == 'wasm32') // Workers need pthreads.
+    goldValue = "Got 3\nOK\n"
+    source = "runtime/workers/worker5.kt"
+}
+
+task worker6(type: RunKonanTest) {
+    disabled = (project.testTarget == 'wasm32') // Workers need pthreads.
+    goldValue = "Got 42\nOK\n"
+    source = "runtime/workers/worker6.kt"
+}
+
+task worker7(type: RunKonanTest) {
+    disabled = (project.testTarget == 'wasm32') // Workers need pthreads.
+    goldValue = "Input\nGot kotlin.Unit\nOK\n"
+    source = "runtime/workers/worker7.kt"
+}
+
 task superFunCall(type: RunKonanTest) {
     goldValue = "<fun:C><fun:C1>\n<fun:C><fun:C3>\n"
     source = "codegen/basics/superFunCall.kt"
diff --git a/backend.native/tests/runtime/workers/worker4.kt b/backend.native/tests/runtime/workers/worker4.kt
new file mode 100644
index 00000000000..0855d8975d8
--- /dev/null
+++ b/backend.native/tests/runtime/workers/worker4.kt
@@ -0,0 +1,17 @@
+package runtime.workers.worker4
+
+import kotlin.test.*
+
+import konan.worker.*
+
+@Test fun runTest() {
+    val worker = startWorker()
+    val future = worker.schedule(TransferMode.CHECKED, { 41 }) {
+        input -> input + 1
+    }
+    future.consume {
+        result -> println("Got $result")
+    }
+    worker.requestTermination().consume { _ -> }
+    println("OK")
+}
\ No newline at end of file
diff --git a/backend.native/tests/runtime/workers/worker5.kt b/backend.native/tests/runtime/workers/worker5.kt
new file mode 100644
index 00000000000..a1d8cdd6de1
--- /dev/null
+++ b/backend.native/tests/runtime/workers/worker5.kt
@@ -0,0 +1,17 @@
+package runtime.workers.worker5
+
+import kotlin.test.*
+
+import konan.worker.*
+
+@Test fun runTest() {
+    val worker = startWorker()
+    val future = worker.schedule(TransferMode.CHECKED, { "zzz".shallowCopy() }) {
+        input -> input.length
+    }
+    future.consume {
+        result -> println("Got $result")
+    }
+    worker.requestTermination().consume { _ -> }
+    println("OK")
+}
\ No newline at end of file
diff --git a/backend.native/tests/runtime/workers/worker6.kt b/backend.native/tests/runtime/workers/worker6.kt
new file mode 100644
index 00000000000..6219b8e5e90
--- /dev/null
+++ b/backend.native/tests/runtime/workers/worker6.kt
@@ -0,0 +1,17 @@
+package runtime.workers.worker6
+
+import kotlin.test.*
+
+import konan.worker.*
+
+@Test fun runTest() {
+    val worker = startWorker()
+    val future = worker.schedule(TransferMode.CHECKED, { 42 }) {
+        input -> input.toString()
+    }
+    future.consume {
+        result -> println("Got $result")
+    }
+    worker.requestTermination().consume { _ -> }
+    println("OK")
+}
\ No newline at end of file
diff --git a/backend.native/tests/runtime/workers/worker7.kt b/backend.native/tests/runtime/workers/worker7.kt
new file mode 100644
index 00000000000..18b520c9642
--- /dev/null
+++ b/backend.native/tests/runtime/workers/worker7.kt
@@ -0,0 +1,17 @@
+package runtime.workers.worker7
+
+import kotlin.test.*
+
+import konan.worker.*
+
+@Test fun runTest() {
+    val worker = startWorker()
+    val future = worker.schedule(TransferMode.CHECKED, { "Input".shallowCopy() }) {
+        input -> println(input)
+    }
+    future.consume {
+        result -> println("Got $result")
+    }
+    worker.requestTermination().consume { _ -> }
+    println("OK")
+}
\ No newline at end of file