diff --git a/vela/worker.go b/vela/worker.go
index fca6d1e..9985ba1 100644
--- a/vela/worker.go
+++ b/vela/worker.go
@@ -12,6 +12,14 @@ import (
 // the server methods of the Vela API.
 type WorkerService service
 
+// WorkerListOptions specifies the optional parameters to the
+// Worker.GetAll method.
+type WorkerListOptions struct {
+	Active          string `url:"active,omitempty"`
+	CheckedInBefore int64  `url:"checked_in_before,omitempty"`
+	CheckedInAfter  int64  `url:"checked_in_after,omitempty"`
+}
+
 // Get returns the provided worker.
 func (svc *WorkerService) Get(hostname string) (*library.Worker, *Response, error) {
 	// set the API endpoint path we send the request to
@@ -27,10 +35,16 @@ func (svc *WorkerService) Get(hostname string) (*library.Worker, *Response, erro
 }
 
 // GetAll returns a list of all workers.
-func (svc *WorkerService) GetAll() (*[]library.Worker, *Response, error) {
+func (svc *WorkerService) GetAll(opt *WorkerListOptions) (*[]library.Worker, *Response, error) {
 	// set the API endpoint path we send the request to
 	u := "/api/v1/workers"
 
+	// add optional arguments if supplied
+	u, err := addOptions(u, opt)
+	if err != nil {
+		return nil, nil, err
+	}
+
 	// slice library Worker type we want to return
 	v := new([]library.Worker)
 
diff --git a/vela/worker_test.go b/vela/worker_test.go
index bdf8a09..82b8624 100644
--- a/vela/worker_test.go
+++ b/vela/worker_test.go
@@ -82,7 +82,7 @@ func TestWorker_GetAll_200(t *testing.T) {
 	_ = json.Unmarshal(data, &want)
 
 	// run test
-	got, resp, err := c.Worker.GetAll()
+	got, resp, err := c.Worker.GetAll(nil)
 
 	if err != nil {
 		t.Errorf("Worker get all returned err: %v", err)
@@ -312,7 +312,7 @@ func ExampleWorkerService_GetAll() {
 	c.Authentication.SetPersonalAccessTokenAuth("token")
 
 	// Get all the workers from the server
-	workers, resp, err := c.Worker.GetAll()
+	workers, resp, err := c.Worker.GetAll(nil)
 	if err != nil {
 		fmt.Println(err)
 	}