diff --git a/redmine/activity.py b/redmine/activity.py
new file mode 100644
index 0000000..8663531
--- /dev/null
+++ b/redmine/activity.py
@@ -0,0 +1,7 @@
+class Activity:
+    def __init__(self, **kwargs):
+        self.id = kwargs.get("id")
+        self.name = kwargs.get("name")
+
+    def __str__(self):
+        return f"{self.id:<4} {self.name:<20}"
diff --git a/redmine/cli/alias.py b/redmine/cli/alias.py
index f455771..322f85c 100644
--- a/redmine/cli/alias.py
+++ b/redmine/cli/alias.py
@@ -1,5 +1,4 @@
 import click
-
 from redmine.cli.config import Config
 
 
diff --git a/redmine/cli/main.py b/redmine/cli/main.py
index b99aedc..9a67300 100644
--- a/redmine/cli/main.py
+++ b/redmine/cli/main.py
@@ -3,9 +3,10 @@
 import sys
 from collections import OrderedDict
 
-import click
 from requests.exceptions import HTTPError
 
+import click
+from redmine.activity import Activity
 from redmine.cli.alias import AliasedGroup
 from redmine.cli.config import Config, pass_config
 from redmine.cli.helpers import get_description, get_note
@@ -297,6 +298,22 @@ def priority(redmine):
         click.echo(Priority(**priority))
 
 
+@list.command()
+@click.pass_obj
+def activity(redmine):
+    """ List time tracking activities """
+
+    try:
+        activities = sorted(
+            redmine.get("enumerations/time_entry_activities"), key=lambda x: x["id"]
+        )
+    except HTTPError as e:
+        return click.echo(click.style(f"Fatal: {e}", fg="red"))
+
+    for activity in activities:
+        click.echo(Activity(**activity))
+
+
 @list.command()
 @click.pass_obj
 def user(redmine):
@@ -406,3 +423,21 @@ def times(redmine, **kwargs):
 
     for entry in entries:
         click.echo(Time(**entry))
+
+
+@cli.command()
+@click.argument("issue_id")
+@click.argument("hours")
+@click.option(OPTIONS["on"]["long"], default=None)
+@click.option(OPTIONS["activity"]["long"], OPTIONS["activity"]["short"], default=None)
+@click.option(OPTIONS["comment"]["long"], OPTIONS["comment"]["short"], default=None)
+@click.pass_obj
+def spent(redmine, issue_id, hours, **kwargs):
+    """ Create new time entry """
+
+    try:
+        redmine.create_time_entry(issue_id, hours, **kwargs)
+    except HTTPError as e:
+        return click.echo(click.style(f"Fatal: {e}", fg="red"))
+
+    click.echo(click.style("Time logged", fg="green"), err=True)
diff --git a/redmine/cli/options.py b/redmine/cli/options.py
index 84dcf9a..69b6e1d 100644
--- a/redmine/cli/options.py
+++ b/redmine/cli/options.py
@@ -31,4 +31,6 @@
     "from": {"long": "--from"},
     "to": {"long": "--to"},
     "on": {"long": "--on"},
+    "activity": {"long": "--activity", "short": "-A"},
+    "comment": {"long": "--comment", "short": "-C"},
 }
diff --git a/redmine/issue.py b/redmine/issue.py
index 9fe5ed7..ee04725 100644
--- a/redmine/issue.py
+++ b/redmine/issue.py
@@ -42,7 +42,7 @@ def get_header(self):
 
         created_on = datetime.strptime(self.created_on, "%Y-%m-%dT%H:%M:%SZ")
         header += (
-            f"Reported by {self.author['name']} on"
+            f"Reported by {self.author['name']} on "
             f"{created_on.date()} {created_on.time()}\n\n"
         )
 
diff --git a/redmine/redmine.py b/redmine/redmine.py
index aaed270..8603222 100644
--- a/redmine/redmine.py
+++ b/redmine/redmine.py
@@ -2,9 +2,10 @@
 import os
 from urllib.parse import urljoin
 
-import click
 import requests
 
+import click
+
 
 class Redmine:
     def __init__(
@@ -82,7 +83,7 @@ def get_users(self):
                         memberships.extend(response["memberships"])
 
             users = {}
-            membership_types = ['user', 'group', 'group_anonymous']
+            membership_types = ["user", "group", "group_anonymous"]
 
             for m in memberships:
                 for t in membership_types:
@@ -221,3 +222,29 @@ def create_issue(self, **kwargs):
         resp.raise_for_status()
 
         return resp.json()["issue"]
+
+    def create_time_entry(self, issue_id, hours, **kwargs):
+        fields = {
+            "time_entry": {
+                "issue_id": issue_id,
+                "hours": hours,
+                "comments": kwargs.get("comment"),
+            }
+        }
+
+        if kwargs.get("activity"):
+            fields["time_entry"].update({"activity_id": kwargs.get("activity")})
+
+        if kwargs.get("on"):
+            fields["time_entry"].update({"spent_on": kwargs.get("on")})
+
+        resp = requests.post(
+            f"{self.url}/time_entries.json",
+            json=fields,
+            headers=self.auth_header,
+            verify=self.ssl_verify,
+        )
+
+        resp.raise_for_status()
+
+        return resp.json()
diff --git a/redmine/time.py b/redmine/time.py
index f553f5e..afe7fc3 100644
--- a/redmine/time.py
+++ b/redmine/time.py
@@ -9,4 +9,11 @@ def __init__(self, *args, **kwargs):
         self.spent_on = kwargs.get("spent_on")
 
     def __str__(self):
-        return f"{self.project['name']:<21.20} {self.issue['id']:>6} {self.user['name']:<21.20} {self.activity['name']:<15.14} {self.spent_on:<11} {self.hours:>6} hours"
+        time = f"{self.project['name']:<21.20} "
+        time += f"{self.issue['id']:>6} "
+        time += f"{self.user['name']:<21.20} "
+        time += f"{self.activity['name']:<15.14} "
+        time += f"{self.spent_on:<11} "
+        time += f"{self.hours:>6} hours"
+
+        return time
diff --git a/setup.py b/setup.py
index 1c76ab1..33d5871 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,6 @@
 # -*- coding: utf-8 -*-
 
-from setuptools import setup, find_packages
-
+from setuptools import find_packages, setup
 
 with open("README.md") as f:
     readme = f.read()