diff --git a/src/components/cylc/workflow/Toolbar.vue b/src/components/cylc/workflow/Toolbar.vue
index 7acc0cb93..d30437f21 100644
--- a/src/components/cylc/workflow/Toolbar.vue
+++ b/src/components/cylc/workflow/Toolbar.vue
@@ -181,6 +181,11 @@ export default {
         this.currentWorkflow.status === WorkflowState.STOPPED.name
       )
     },
+    isInstalled () {
+      return (
+        this.currentWorkflow && this.currentWorkflow.status === WorkflowState.INSTALLED.name
+      )
+    },
     enabled () {
       // object holding the states of controls that are supposed to be enabled
       // NOTE: this is a temporary solution until we are able to subscribe to
@@ -188,6 +193,7 @@ export default {
       return {
         pauseToggle: (
           // the play/pause button
+          !this.isInstalled &&
           !this.isStopped &&
           !this.expecting.stop &&
           this.currentWorkflow.status !== WorkflowState.STOPPING.name &&
@@ -198,6 +204,7 @@ export default {
         ),
         stopToggle: (
           // the stop button
+          !this.isInstalled &&
           !this.isStopped &&
           (
             this.expecting.stop === null ||
diff --git a/tests/unit/components/cylc/workflow/toolbar.vue.spec.js b/tests/unit/components/cylc/workflow/toolbar.vue.spec.js
new file mode 100644
index 000000000..1b86beb8a
--- /dev/null
+++ b/tests/unit/components/cylc/workflow/toolbar.vue.spec.js
@@ -0,0 +1,144 @@
+/**
+ * Copyright (C) NIWA & British Crown (Met Office) & Contributors.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import { createLocalVue, mount } from '@vue/test-utils'
+import { expect } from 'chai'
+import Vue from 'vue'
+import Vuex from 'vuex'
+import Vuetify from 'vuetify/lib'
+import Toolbar from '@/components/cylc/workflow/Toolbar'
+import storeOptions from '@/store/options'
+import WorkflowState from '@/model/WorkflowState.model'
+
+const localVue = createLocalVue()
+
+Vue.use(Vuetify)
+Vue.use(Vuex)
+
+describe('Workflow component', () => {
+  let $route
+  const store = new Vuex.Store(storeOptions)
+  let vuetify
+  const mountFunction = options => {
+    return mount(Toolbar, {
+      localVue,
+      vuetify,
+      store,
+      mocks: {
+        $route,
+        $t: () => {} // vue-i18n
+      },
+      ...options
+    })
+  }
+  const resetState = () => {
+    store.commit('app/setTitle', 'test workflow toolbar')
+    store.commit('workflows/SET_WORKFLOW_NAME', null)
+    store.commit('workflows/SET_WORKFLOWS', null)
+  }
+  beforeEach(() => {
+    vuetify = new Vuetify({
+      theme: { disable: true },
+      icons: {
+        iconfont: 'mdi'
+      }
+    })
+    $route = {
+      name: 'workflow',
+      meta: {
+        layout: 'default'
+      }
+    }
+    resetState()
+  })
+  afterEach(resetState)
+  describe('workflow/toolbar', () => {
+    it('should compute the right workflow status', () => {
+      const tests = [
+        {
+          status: WorkflowState.INSTALLED.name,
+          expected: {
+            isInstalled: true,
+            isPaused: false,
+            isStopped: false
+          }
+        },
+        {
+          status: WorkflowState.PAUSED.name,
+          expected: {
+            isInstalled: false,
+            isPaused: true,
+            isStopped: false
+          }
+        },
+        {
+          status: WorkflowState.STOPPED.name,
+          expected: {
+            isInstalled: false,
+            isPaused: false,
+            isStopped: true
+          }
+        },
+        {
+          status: WorkflowState.RUNNING.name,
+          expected: {
+            isInstalled: false,
+            isPaused: false,
+            isStopped: false
+          }
+        }
+      ]
+      for (const test of tests) {
+        store.commit('workflows/SET_WORKFLOW_NAME', 'a')
+        store.commit('workflows/SET_WORKFLOWS', {
+          a: {
+            name: 'a',
+            status: test.status
+          }
+        })
+        const wrapper = mountFunction({
+          propsData: {
+            views: []
+          }
+        })
+        for (const key of Object.keys(test.expected)) {
+          expect(wrapper.vm[key]).to.equal(test.expected[key])
+        }
+      }
+    })
+    it('should have pause/stop disabled for an installed workflow', () => {
+      store.commit('workflows/SET_WORKFLOW_NAME', 'b')
+      store.commit('workflows/SET_WORKFLOWS', {
+        a: {
+          name: 'a',
+          status: WorkflowState.INSTALLED.name
+        },
+        b: {
+          name: 'b',
+          status: WorkflowState.INSTALLED.name
+        }
+      })
+      const wrapper = mountFunction({
+        propsData: {
+          views: []
+        }
+      })
+      expect(wrapper.vm.enabled.pauseToggle).to.equal(false)
+      expect(wrapper.vm.enabled.stopToggle).to.equal(false)
+    })
+  })
+})