diff --git a/JiraPS/Public/Invoke-JiraIssueTransition.ps1 b/JiraPS/Public/Invoke-JiraIssueTransition.ps1
index 85199183..8578f397 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()]
@@ -179,6 +182,16 @@ function Invoke-JiraIssueTransition {
             }
         }
 
+        if ($TimeSpent) {
+            Write-DebugMessage "[$($MyInvocation.MyCommand.Name)] Adding time spent"
+            $requestBody.update.worklog += , @{
+                'add' = @{
+                    'timeSpent' = $TimeSpent
+                    'started' = (Get-Date -f "yyyy-MM-ddThh:mm:ss.fffzz00") #should be ISO 8601: YYYY-MM-DDThh:mm:ss.sTZD, format "o" not working, cause zzz contains semicolon
+                }
+            }
+        }
+
         $parameter = @{
             URI        = "{0}/transitions" -f $issueObj.RestURL
             Method     = "POST"
diff --git a/Tests/Functions/Invoke-JiraIssueTransition.Unit.Tests.ps1 b/Tests/Functions/Invoke-JiraIssueTransition.Unit.Tests.ps1
index 5cc7c73c..bd78f0cf 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 a worklog if provide 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..d3aaa02c 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 -TimeSpent "15m" 'Transition comment'
 ```
 
-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 worklog of 15m (you can use jira suffixes, e.g. 8h)
+Requires the comment field to be configured visible for transition and Time Tracking to be enabled in JIRA instance
 
 ### EXAMPLE 3
 
@@ -176,6 +176,24 @@ Accept pipeline input: False
 Accept wildcard characters: False
 ```
 
+### -TimeSpent
+
+Time Spent worklog should be added to issue
+
+Time Tracking should be enabled on JIRA instance.
+
+```yaml
+Type: String
+Parameter Sets: (All)
+Aliases:
+
+Required: False
+Position: 6
+Default value: None
+Accept pipeline input: False
+Accept wildcard characters: False
+```
+
 ### -Credential
 
 Credentials to use to connect to JIRA.
@@ -187,7 +205,7 @@ Parameter Sets: (All)
 Aliases:
 
 Required: False
-Position: 6
+Position: 7
 Default value: None
 Accept pipeline input: False
 Accept wildcard characters: False
@@ -212,7 +230,7 @@ Accept wildcard characters: False
 ### CommonParameters
 
 This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutVariable, -OutBuffer, -PipelineVariable, -Verbose, -WarningAction, and -WarningVariable.
-For more information, see about_CommonParameters (http://go.microsoft.com/fwlink/?LinkID=113216).
+For more information, see about_CommonParameters (<http://go.microsoft.com/fwlink/?LinkID=113216>).
 
 ## INPUTS