diff --git a/src/ifcopenshell-python/ifcopenshell/api/sequence/add_recurrence_pattern.py b/src/ifcopenshell-python/ifcopenshell/api/sequence/add_recurrence_pattern.py
new file mode 100644
index 0000000000..2e4d830584
--- /dev/null
+++ b/src/ifcopenshell-python/ifcopenshell/api/sequence/add_recurrence_pattern.py
@@ -0,0 +1,15 @@
+import ifcopenshell.api
+
+
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {"work_time": None, "recurrence_type": None}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        recurrence_pattern = self.file.create_entity("IfcRecurrencePattern")
+        recurrence_pattern.RecurrenceType = self.settings["recurrence_type"]
+        self.settings["work_time"].RecurrencePattern = recurrence_pattern
+        return recurrence_pattern
diff --git a/src/ifcopenshell-python/ifcopenshell/api/sequence/add_time_period.py b/src/ifcopenshell-python/ifcopenshell/api/sequence/add_time_period.py
new file mode 100644
index 0000000000..a323a6a553
--- /dev/null
+++ b/src/ifcopenshell-python/ifcopenshell/api/sequence/add_time_period.py
@@ -0,0 +1,25 @@
+import ifcopenshell.api
+import ifcopenshell.util.date
+from datetime import datetime
+from datetime import timedelta
+
+
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {
+            "recurrence_pattern": None,
+            "start_time": None,
+            "end_time": None,
+        }
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        time_period = self.file.create_entity("IfcTimePeriod")
+        time_period.StartTime = ifcopenshell.util.date.datetime2ifc(self.settings["start_time"], "IfcTime")
+        time_period.EndTime = ifcopenshell.util.date.datetime2ifc(self.settings["end_time"], "IfcTime")
+        time_periods = list(self.settings["recurrence_pattern"].TimePeriods or [])
+        time_periods.append(time_period)
+        self.settings["recurrence_pattern"].TimePeriods = time_periods
+        return time_period
diff --git a/src/ifcopenshell-python/ifcopenshell/api/sequence/add_work_time.py b/src/ifcopenshell-python/ifcopenshell/api/sequence/add_work_time.py
index 40589b5098..b5a7eedbf9 100644
--- a/src/ifcopenshell-python/ifcopenshell/api/sequence/add_work_time.py
+++ b/src/ifcopenshell-python/ifcopenshell/api/sequence/add_work_time.py
@@ -1,12 +1,12 @@
 class Usecase:
     def __init__(self, file, **settings):
         self.file = file
-        self.settings = {"work_calendar": None, "type": "WorkingTimes", "name": None}
+        self.settings = {"work_calendar": None, "time_type": None}
         for key, value in settings.items():
             self.settings[key] = value
 
     def execute(self):
-        work_time = self.file.create_entity("IfcWorkTime", **{"Name": self.settings["name"]})
+        work_time = self.file.create_entity("IfcWorkTime")
         if self.settings["type"] == "WorkingTimes":
             working_times = list(self.settings["work_calendar"].WorkingTimes or [])
             working_times.append(work_time)
diff --git a/src/ifcopenshell-python/ifcopenshell/api/sequence/edit_recurrence_pattern.py b/src/ifcopenshell-python/ifcopenshell/api/sequence/edit_recurrence_pattern.py
index ee57a173bc..f7691ad4e3 100644
--- a/src/ifcopenshell-python/ifcopenshell/api/sequence/edit_recurrence_pattern.py
+++ b/src/ifcopenshell-python/ifcopenshell/api/sequence/edit_recurrence_pattern.py
@@ -13,9 +13,14 @@ class Usecase:
             if name == "TimePeriods" and value:
                 periods = []
                 for period in value:
-                    periods.append(self.file.create_entity("IfcTimePeriod", **{
-                        "StartTime": ifcopenshell.util.date.datetime2ifc(period[0]),
-                        "EndTime": ifcopenshell.util.date.datetime2ifc(period[1])
-                    }))
+                    periods.append(
+                        self.file.create_entity(
+                            "IfcTimePeriod",
+                            **{
+                                "StartTime": ifcopenshell.util.date.datetime2ifc(period[0]),
+                                "EndTime": ifcopenshell.util.date.datetime2ifc(period[1]),
+                            },
+                        )
+                    )
                 value = periods
             setattr(self.settings["recurrence_pattern"], name, value)
diff --git a/src/ifcopenshell-python/ifcopenshell/api/sequence/remove_recurrence_pattern.py b/src/ifcopenshell-python/ifcopenshell/api/sequence/remove_recurrence_pattern.py
new file mode 100644
index 0000000000..23ec89376a
--- /dev/null
+++ b/src/ifcopenshell-python/ifcopenshell/api/sequence/remove_recurrence_pattern.py
@@ -0,0 +1,12 @@
+import ifcopenshell.api
+
+
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {"recurrence_pattern": None}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        self.file.remove(self.settings["recurrence_pattern"])
diff --git a/src/ifcopenshell-python/ifcopenshell/api/sequence/remove_time_period.py b/src/ifcopenshell-python/ifcopenshell/api/sequence/remove_time_period.py
new file mode 100644
index 0000000000..4b0d59d7aa
--- /dev/null
+++ b/src/ifcopenshell-python/ifcopenshell/api/sequence/remove_time_period.py
@@ -0,0 +1,12 @@
+import ifcopenshell.api
+
+
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {"time_period": None}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        self.file.remove(self.settings["time_period"])
diff --git a/src/ifcopenshell-python/ifcopenshell/api/sequence/remove_work_time.py b/src/ifcopenshell-python/ifcopenshell/api/sequence/remove_work_time.py
new file mode 100644
index 0000000000..10562c1840
--- /dev/null
+++ b/src/ifcopenshell-python/ifcopenshell/api/sequence/remove_work_time.py
@@ -0,0 +1,9 @@
+class Usecase:
+    def __init__(self, file, **settings):
+        self.file = file
+        self.settings = {"work_time": None}
+        for key, value in settings.items():
+            self.settings[key] = value
+
+    def execute(self):
+        self.file.remove(self.settings["work_time"])