diff --git a/common/types/schedule_service.go b/common/types/schedule_service.go
new file mode 100644
index 00000000000..b4da1e1677e
--- /dev/null
+++ b/common/types/schedule_service.go
@@ -0,0 +1,431 @@
+// Copyright (c) 2024 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package types
+
+import "time"
+
+// --- Request/Response Types for Schedule APIs ---
+
+// ScheduleListEntry represents a single schedule in a list response.
+type ScheduleListEntry struct {
+	ScheduleID     string         `json:"scheduleId,omitempty"`
+	WorkflowType   *WorkflowType  `json:"workflowType,omitempty"`
+	State          *ScheduleState `json:"state,omitempty"`
+	CronExpression string         `json:"cronExpression,omitempty"`
+}
+
+func (v *ScheduleListEntry) GetScheduleID() (o string) {
+	if v != nil {
+		return v.ScheduleID
+	}
+	return
+}
+
+func (v *ScheduleListEntry) GetWorkflowType() *WorkflowType {
+	if v != nil {
+		return v.WorkflowType
+	}
+	return nil
+}
+
+func (v *ScheduleListEntry) GetState() *ScheduleState {
+	if v != nil {
+		return v.State
+	}
+	return nil
+}
+
+func (v *ScheduleListEntry) GetCronExpression() (o string) {
+	if v != nil {
+		return v.CronExpression
+	}
+	return
+}
+
+// CreateScheduleRequest is the request to create a new schedule.
+type CreateScheduleRequest struct {
+	Domain           string            `json:"domain,omitempty"`
+	ScheduleID       string            `json:"scheduleId,omitempty"`
+	Spec             *ScheduleSpec     `json:"spec,omitempty"`
+	Action           *ScheduleAction   `json:"action,omitempty"`
+	Policies         *SchedulePolicies `json:"policies,omitempty"`
+	Memo             *Memo             `json:"-"` // Filtering PII
+	SearchAttributes *SearchAttributes `json:"-"` // Filtering PII
+}
+
+func (v *CreateScheduleRequest) GetDomain() (o string) {
+	if v != nil {
+		return v.Domain
+	}
+	return
+}
+
+func (v *CreateScheduleRequest) GetScheduleID() (o string) {
+	if v != nil {
+		return v.ScheduleID
+	}
+	return
+}
+
+func (v *CreateScheduleRequest) GetSpec() *ScheduleSpec {
+	if v != nil {
+		return v.Spec
+	}
+	return nil
+}
+
+func (v *CreateScheduleRequest) GetAction() *ScheduleAction {
+	if v != nil {
+		return v.Action
+	}
+	return nil
+}
+
+func (v *CreateScheduleRequest) GetPolicies() *SchedulePolicies {
+	if v != nil {
+		return v.Policies
+	}
+	return nil
+}
+
+func (v *CreateScheduleRequest) GetMemo() *Memo {
+	if v != nil {
+		return v.Memo
+	}
+	return nil
+}
+
+func (v *CreateScheduleRequest) GetSearchAttributes() *SearchAttributes {
+	if v != nil {
+		return v.SearchAttributes
+	}
+	return nil
+}
+
+// CreateScheduleResponse is the response for creating a schedule.
+type CreateScheduleResponse struct{}
+
+// DescribeScheduleRequest is the request to describe a schedule.
+type DescribeScheduleRequest struct {
+	Domain     string `json:"domain,omitempty"`
+	ScheduleID string `json:"scheduleId,omitempty"`
+}
+
+func (v *DescribeScheduleRequest) GetDomain() (o string) {
+	if v != nil {
+		return v.Domain
+	}
+	return
+}
+
+func (v *DescribeScheduleRequest) GetScheduleID() (o string) {
+	if v != nil {
+		return v.ScheduleID
+	}
+	return
+}
+
+// DescribeScheduleResponse is the response for describing a schedule.
+type DescribeScheduleResponse struct {
+	Spec     *ScheduleSpec     `json:"spec,omitempty"`
+	Action   *ScheduleAction   `json:"action,omitempty"`
+	Policies *SchedulePolicies `json:"policies,omitempty"`
+	State    *ScheduleState    `json:"state,omitempty"`
+	Info     *ScheduleInfo     `json:"info,omitempty"`
+}
+
+func (v *DescribeScheduleResponse) GetSpec() *ScheduleSpec {
+	if v != nil {
+		return v.Spec
+	}
+	return nil
+}
+
+func (v *DescribeScheduleResponse) GetAction() *ScheduleAction {
+	if v != nil {
+		return v.Action
+	}
+	return nil
+}
+
+func (v *DescribeScheduleResponse) GetPolicies() *SchedulePolicies {
+	if v != nil {
+		return v.Policies
+	}
+	return nil
+}
+
+func (v *DescribeScheduleResponse) GetState() *ScheduleState {
+	if v != nil {
+		return v.State
+	}
+	return nil
+}
+
+func (v *DescribeScheduleResponse) GetInfo() *ScheduleInfo {
+	if v != nil {
+		return v.Info
+	}
+	return nil
+}
+
+// UpdateScheduleRequest is the request to update a schedule.
+type UpdateScheduleRequest struct {
+	Domain     string            `json:"domain,omitempty"`
+	ScheduleID string            `json:"scheduleId,omitempty"`
+	Spec       *ScheduleSpec     `json:"spec,omitempty"`
+	Action     *ScheduleAction   `json:"action,omitempty"`
+	Policies   *SchedulePolicies `json:"policies,omitempty"`
+}
+
+func (v *UpdateScheduleRequest) GetDomain() (o string) {
+	if v != nil {
+		return v.Domain
+	}
+	return
+}
+
+func (v *UpdateScheduleRequest) GetScheduleID() (o string) {
+	if v != nil {
+		return v.ScheduleID
+	}
+	return
+}
+
+func (v *UpdateScheduleRequest) GetSpec() *ScheduleSpec {
+	if v != nil {
+		return v.Spec
+	}
+	return nil
+}
+
+func (v *UpdateScheduleRequest) GetAction() *ScheduleAction {
+	if v != nil {
+		return v.Action
+	}
+	return nil
+}
+
+func (v *UpdateScheduleRequest) GetPolicies() *SchedulePolicies {
+	if v != nil {
+		return v.Policies
+	}
+	return nil
+}
+
+// UpdateScheduleResponse is the response for updating a schedule.
+type UpdateScheduleResponse struct{}
+
+// DeleteScheduleRequest is the request to delete a schedule.
+type DeleteScheduleRequest struct {
+	Domain     string `json:"domain,omitempty"`
+	ScheduleID string `json:"scheduleId,omitempty"`
+}
+
+func (v *DeleteScheduleRequest) GetDomain() (o string) {
+	if v != nil {
+		return v.Domain
+	}
+	return
+}
+
+func (v *DeleteScheduleRequest) GetScheduleID() (o string) {
+	if v != nil {
+		return v.ScheduleID
+	}
+	return
+}
+
+// DeleteScheduleResponse is the response for deleting a schedule.
+type DeleteScheduleResponse struct{}
+
+// PauseScheduleRequest is the request to pause a schedule.
+type PauseScheduleRequest struct {
+	Domain     string `json:"domain,omitempty"`
+	ScheduleID string `json:"scheduleId,omitempty"`
+	Reason     string `json:"reason,omitempty"`
+}
+
+func (v *PauseScheduleRequest) GetDomain() (o string) {
+	if v != nil {
+		return v.Domain
+	}
+	return
+}
+
+func (v *PauseScheduleRequest) GetScheduleID() (o string) {
+	if v != nil {
+		return v.ScheduleID
+	}
+	return
+}
+
+func (v *PauseScheduleRequest) GetReason() (o string) {
+	if v != nil {
+		return v.Reason
+	}
+	return
+}
+
+// PauseScheduleResponse is the response for pausing a schedule.
+type PauseScheduleResponse struct{}
+
+// UnpauseScheduleRequest is the request to resume a paused schedule.
+type UnpauseScheduleRequest struct {
+	Domain        string                `json:"domain,omitempty"`
+	ScheduleID    string                `json:"scheduleId,omitempty"`
+	Reason        string                `json:"reason,omitempty"`
+	CatchUpPolicy ScheduleCatchUpPolicy `json:"catchUpPolicy,omitempty"`
+}
+
+func (v *UnpauseScheduleRequest) GetDomain() (o string) {
+	if v != nil {
+		return v.Domain
+	}
+	return
+}
+
+func (v *UnpauseScheduleRequest) GetScheduleID() (o string) {
+	if v != nil {
+		return v.ScheduleID
+	}
+	return
+}
+
+func (v *UnpauseScheduleRequest) GetReason() (o string) {
+	if v != nil {
+		return v.Reason
+	}
+	return
+}
+
+func (v *UnpauseScheduleRequest) GetCatchUpPolicy() (o ScheduleCatchUpPolicy) {
+	if v != nil {
+		return v.CatchUpPolicy
+	}
+	return
+}
+
+// UnpauseScheduleResponse is the response for resuming a schedule.
+type UnpauseScheduleResponse struct{}
+
+// ListSchedulesRequest is the request to list schedules in a domain.
+type ListSchedulesRequest struct {
+	Domain        string `json:"domain,omitempty"`
+	PageSize      int32  `json:"pageSize,omitempty"`
+	NextPageToken []byte `json:"nextPageToken,omitempty"`
+}
+
+func (v *ListSchedulesRequest) GetDomain() (o string) {
+	if v != nil {
+		return v.Domain
+	}
+	return
+}
+
+func (v *ListSchedulesRequest) GetPageSize() (o int32) {
+	if v != nil {
+		return v.PageSize
+	}
+	return
+}
+
+func (v *ListSchedulesRequest) GetNextPageToken() (o []byte) {
+	if v != nil {
+		return v.NextPageToken
+	}
+	return
+}
+
+// ListSchedulesResponse is the response for listing schedules.
+type ListSchedulesResponse struct {
+	Schedules     []*ScheduleListEntry `json:"schedules,omitempty"`
+	NextPageToken []byte              `json:"nextPageToken,omitempty"`
+}
+
+func (v *ListSchedulesResponse) GetSchedules() (o []ScheduleListEntry) {
+	if v != nil {
+		return v.Schedules
+	}
+	return
+}
+
+func (v *ListSchedulesResponse) GetNextPageToken() (o []byte) {
+	if v != nil {
+		return v.NextPageToken
+	}
+	return
+}
+
+// BackfillScheduleRequest is the request to trigger a backfill for a time range.
+type BackfillScheduleRequest struct {
+	Domain        string                `json:"domain,omitempty"`
+	ScheduleID    string                `json:"scheduleId,omitempty"`
+	StartTime     time.Time             `json:"startTime,omitempty"`
+	EndTime       time.Time             `json:"endTime,omitempty"`
+	OverlapPolicy ScheduleOverlapPolicy `json:"overlapPolicy,omitempty"`
+	BackfillID    string                `json:"backfillId,omitempty"`
+}
+
+func (v *BackfillScheduleRequest) GetDomain() (o string) {
+	if v != nil {
+		return v.Domain
+	}
+	return
+}
+
+func (v *BackfillScheduleRequest) GetScheduleID() (o string) {
+	if v != nil {
+		return v.ScheduleID
+	}
+	return
+}
+
+func (v *BackfillScheduleRequest) GetStartTime() (o time.Time) {
+	if v != nil {
+		return v.StartTime
+	}
+	return
+}
+
+func (v *BackfillScheduleRequest) GetEndTime() (o time.Time) {
+	if v != nil {
+		return v.EndTime
+	}
+	return
+}
+
+func (v *BackfillScheduleRequest) GetOverlapPolicy() (o ScheduleOverlapPolicy) {
+	if v != nil {
+		return v.OverlapPolicy
+	}
+	return
+}
+
+func (v *BackfillScheduleRequest) GetBackfillID() (o string) {
+	if v != nil {
+		return v.BackfillID
+	}
+	return
+}
+
+// BackfillScheduleResponse is the response for triggering a backfill.
+type BackfillScheduleResponse struct{}
diff --git a/common/types/schedule_service_test.go b/common/types/schedule_service_test.go
new file mode 100644
index 00000000000..f7a62b91a6a
--- /dev/null
+++ b/common/types/schedule_service_test.go
@@ -0,0 +1,161 @@
+// Copyright (c) 2024 Uber Technologies, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package types
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestScheduleListEntry_NilGetters(t *testing.T) {
+	var v *ScheduleListEntry
+	assert.Equal(t, "", v.GetScheduleID())
+	assert.Nil(t, v.GetWorkflowType())
+	assert.Nil(t, v.GetState())
+	assert.Equal(t, "", v.GetCronExpression())
+}
+
+func TestScheduleListEntry_Getters(t *testing.T) {
+	wt := &WorkflowType{Name: "test-wf"}
+	st := &ScheduleState{Paused: true}
+	v := &ScheduleListEntry{
+		ScheduleID:     "sched-1",
+		WorkflowType:   wt,
+		State:          st,
+		CronExpression: "*/5 * * * *",
+	}
+	assert.Equal(t, "sched-1", v.GetScheduleID())
+	assert.Equal(t, wt, v.GetWorkflowType())
+	assert.Equal(t, st, v.GetState())
+	assert.Equal(t, "*/5 * * * *", v.GetCronExpression())
+}
+
+func TestCreateScheduleRequest_NilGetters(t *testing.T) {
+	var v *CreateScheduleRequest
+	assert.Equal(t, "", v.GetDomain())
+	assert.Equal(t, "", v.GetScheduleID())
+	assert.Nil(t, v.GetSpec())
+	assert.Nil(t, v.GetAction())
+	assert.Nil(t, v.GetPolicies())
+	assert.Nil(t, v.GetMemo())
+	assert.Nil(t, v.GetSearchAttributes())
+}
+
+func TestDescribeScheduleRequest_NilGetters(t *testing.T) {
+	var v *DescribeScheduleRequest
+	assert.Equal(t, "", v.GetDomain())
+	assert.Equal(t, "", v.GetScheduleID())
+}
+
+func TestDescribeScheduleResponse_NilGetters(t *testing.T) {
+	var v *DescribeScheduleResponse
+	assert.Nil(t, v.GetSpec())
+	assert.Nil(t, v.GetAction())
+	assert.Nil(t, v.GetPolicies())
+	assert.Nil(t, v.GetState())
+	assert.Nil(t, v.GetInfo())
+}
+
+func TestUpdateScheduleRequest_NilGetters(t *testing.T) {
+	var v *UpdateScheduleRequest
+	assert.Equal(t, "", v.GetDomain())
+	assert.Equal(t, "", v.GetScheduleID())
+	assert.Nil(t, v.GetSpec())
+	assert.Nil(t, v.GetAction())
+	assert.Nil(t, v.GetPolicies())
+}
+
+func TestDeleteScheduleRequest_NilGetters(t *testing.T) {
+	var v *DeleteScheduleRequest
+	assert.Equal(t, "", v.GetDomain())
+	assert.Equal(t, "", v.GetScheduleID())
+}
+
+func TestPauseScheduleRequest_NilGetters(t *testing.T) {
+	var v *PauseScheduleRequest
+	assert.Equal(t, "", v.GetDomain())
+	assert.Equal(t, "", v.GetScheduleID())
+	assert.Equal(t, "", v.GetReason())
+}
+
+func TestUnpauseScheduleRequest_NilGetters(t *testing.T) {
+	var v *UnpauseScheduleRequest
+	assert.Equal(t, "", v.GetDomain())
+	assert.Equal(t, "", v.GetScheduleID())
+	assert.Equal(t, "", v.GetReason())
+	assert.Equal(t, ScheduleCatchUpPolicyInvalid, v.GetCatchUpPolicy())
+}
+
+func TestUnpauseScheduleRequest_Getters(t *testing.T) {
+	v := &UnpauseScheduleRequest{
+		Domain:        "test-domain",
+		ScheduleID:    "sched-1",
+		Reason:        "resuming",
+		CatchUpPolicy: ScheduleCatchUpPolicyAll,
+	}
+	assert.Equal(t, "test-domain", v.GetDomain())
+	assert.Equal(t, "sched-1", v.GetScheduleID())
+	assert.Equal(t, "resuming", v.GetReason())
+	assert.Equal(t, ScheduleCatchUpPolicyAll, v.GetCatchUpPolicy())
+}
+
+func TestListSchedulesRequest_NilGetters(t *testing.T) {
+	var v *ListSchedulesRequest
+	assert.Equal(t, "", v.GetDomain())
+	assert.Equal(t, int32(0), v.GetPageSize())
+	assert.Nil(t, v.GetNextPageToken())
+}
+
+func TestListSchedulesResponse_NilGetters(t *testing.T) {
+	var v *ListSchedulesResponse
+	assert.Nil(t, v.GetSchedules())
+	assert.Nil(t, v.GetNextPageToken())
+}
+
+func TestBackfillScheduleRequest_NilGetters(t *testing.T) {
+	var v *BackfillScheduleRequest
+	assert.Equal(t, "", v.GetDomain())
+	assert.Equal(t, "", v.GetScheduleID())
+	assert.Equal(t, time.Time{}, v.GetStartTime())
+	assert.Equal(t, time.Time{}, v.GetEndTime())
+	assert.Equal(t, ScheduleOverlapPolicyInvalid, v.GetOverlapPolicy())
+	assert.Equal(t, "", v.GetBackfillID())
+}
+
+func TestBackfillScheduleRequest_Getters(t *testing.T) {
+	now := time.Now().Truncate(time.Second)
+	v := &BackfillScheduleRequest{
+		Domain:        "test-domain",
+		ScheduleID:    "sched-1",
+		StartTime:     now,
+		EndTime:       now.Add(time.Hour),
+		OverlapPolicy: ScheduleOverlapPolicyBuffer,
+		BackfillID:    "bf-1",
+	}
+	assert.Equal(t, "test-domain", v.GetDomain())
+	assert.Equal(t, "sched-1", v.GetScheduleID())
+	assert.Equal(t, now, v.GetStartTime())
+	assert.Equal(t, now.Add(time.Hour), v.GetEndTime())
+	assert.Equal(t, ScheduleOverlapPolicyBuffer, v.GetOverlapPolicy())
+	assert.Equal(t, "bf-1", v.GetBackfillID())
+}