diff --git a/JiraPS/Public/Invoke-JiraIssueTransition.ps1 b/JiraPS/Public/Invoke-JiraIssueTransition.ps1
index e9f96d70..0e6f4845 100644
--- a/JiraPS/Public/Invoke-JiraIssueTransition.ps1
+++ b/JiraPS/Public/Invoke-JiraIssueTransition.ps1
@@ -41,6 +41,9 @@ function Invoke-JiraIssueTransition {
         [String]
         $Comment,
 
+        [String]
+        $TimeSpent,
+
         [Parameter()]
         [System.Management.Automation.PSCredential]
         [System.Management.Automation.Credential()]
@@ -174,7 +177,17 @@ function Invoke-JiraIssueTransition {
             Write-DebugMessage "[$($MyInvocation.MyCommand.Name)] Adding comment"
             $requestBody.update.comment += , @{
                 'add' = @{
-                    'body' = $Comment
+                    'body' = $Comment                    
+                }
+            }
+        }
+
+        if($TimeSpent){
+            Write-DebugMessage "[$($MyInvocation.MyCommand.Name)] Adding time spent"
+            $requestBody.update.worklog += , @{
+                'add' = @{
+                    'timeSpent' = $TimeSpent                    
+                    'started' = (Get-Date -Format O)  # Round-trip date/time pattern '2019-03-18T17:59:38.0788189+03:00'
                 }
             }
         }
diff --git a/Tests/Functions/Invoke-JiraIssueTransition.Unit.Tests.ps1 b/Tests/Functions/Invoke-JiraIssueTransition.Unit.Tests.ps1
index 5cc7c73c..a3b63eb0 100644
--- a/Tests/Functions/Invoke-JiraIssueTransition.Unit.Tests.ps1
+++ b/Tests/Functions/Invoke-JiraIssueTransition.Unit.Tests.ps1
@@ -163,6 +163,12 @@ Describe "Invoke-JiraIssueTransition" -Tag 'Unit' {
             Assert-MockCalled -CommandName Invoke-JiraMethod -ModuleName JiraPS -Times 1 -Scope It -ParameterFilter { $Method -eq 'Post' -and $URI -like "*/rest/api/latest/issue/$issueID/transitions" -and $Body -like '*body*test comment*' }
         }
 
+        It "Adds time spent if provided to the -TimeSpent parameter" {
+            { Invoke-JiraIssueTransition -Issue $issueKey -Transition 11 -TimeSpent "15m"} | Should Not Throw
+
+            Assert-MockCalled -CommandName Invoke-JiraMethod -ModuleName JiraPS -Times 1 -Scope It -ParameterFilter { $Method -eq 'Post' -and $URI -like "*/rest/api/latest/issue/$issueID/transitions" -and $Body -like '*timeSpent*15m*' }
+        }
+
         It "Returns the Issue object when -Passthru is provided" {
             { $result = Invoke-JiraIssueTransition -Issue $issueKey -Transition 11 -Passthru} | Should Not Throw
             $result = Invoke-JiraIssueTransition -Issue $issueKey -Transition 11 -Passthru
diff --git a/docs/en-US/commands/Invoke-JiraIssueTransition.md b/docs/en-US/commands/Invoke-JiraIssueTransition.md
index 6f2aa5d2..0aba5123 100644
--- a/docs/en-US/commands/Invoke-JiraIssueTransition.md
+++ b/docs/en-US/commands/Invoke-JiraIssueTransition.md
@@ -17,7 +17,7 @@ Performs an issue transition on a JIRA issue changing it's status
 
 ```powershell
 Invoke-JiraIssueTransition [-Issue] <Object> [-Transition] <Object> [[-Fields] <PSCustomObject>]
- [[-Assignee] <Object>] [[-Comment] <String>] [[-Credential] <PSCredential>] [-Passthru] [<CommonParameters>]
+ [[-Assignee] <Object>] [[-Comment] <String>] [[-TimeSpent] <String>] [[-Credential] <PSCredential>] [-Passthru] [<CommonParameters>]
 ```
 
 ## DESCRIPTION
@@ -48,11 +48,11 @@ Invokes transition ID 11 on issue TEST-01.
 ### EXAMPLE 2
 
 ```powershell
-Invoke-JiraIssueTransition -Issue TEST-01 -Transition 11 -Comment 'Transition comment'
+Invoke-JiraIssueTransition -Issue TEST-01 -Transition 11 -Comment 'Transition comment' -TimeSpent "15m"
 ```
 
-Invokes transition ID 11 on issue TEST-01 with a comment.
-Requires the comment field to be configured visible for transition.
+Invokes transition ID 11 on issue TEST-01 with a comment and time spent of 15m (can be any jira supported suffix, like 'h' for hours e.g.)
+Requires the comment field to be configured visible for transition and time tracking enabled in JIRA preferences. 
 
 ### EXAMPLE 3