diff --git a/models/models.go b/models/models.go
index 2d8bfcd..6387479 100644
--- a/models/models.go
+++ b/models/models.go
@@ -4,22 +4,21 @@ import (
 	"time"
 )
 
-// JobReq represents a job request.
-type JobReq struct {
-	TaskName string   `json:"task"`
-	JobID    string   `json:"job_id"`
-	Queue    string   `json:"queue"`
-	ETA      string   `json:"eta"`
-	Retries  int      `json:"retries"`
-	TTL      int      `json:"ttl"`
-	Args     []string `json:"args"`
-	DB       string   `json:"db"`
-
-	ttlDuration time.Duration
-}
-
-// JobResp is the response sent to a job request.
-type JobResp struct {
+// JobRequest represents a job request with metadata and execution details.
+type JobRequest struct {
+	TaskName    string        `json:"task"`
+	JobID       string        `json:"job_id"`
+	Queue       string        `json:"queue"`
+	ETA         *time.Time    `json:"eta"`
+	Retries     int           `json:"retries"`
+	TTL         int           `json:"ttl"`
+	Args        []string      `json:"args"`
+	DB          string        `json:"db"`
+	TTLDuration time.Duration `json:"-"` // Internal field, not serialized to JSON
+}
+
+// JobResponse represents the response sent after processing a job.
+type JobResponse struct {
 	JobID    string     `json:"job_id"`
 	TaskName string     `json:"task"`
 	Queue    string     `json:"queue"`
@@ -27,37 +26,58 @@ type JobResp struct {
 	Retries  int        `json:"retries"`
 }
 
-// JobStatusResp represents the response of a single job.
-type JobStatusResp struct {
+// JobStatusResponse represents the status of a single job.
+type JobStatusResponse struct {
 	JobID string `json:"job_id"`
 	State string `json:"state"`
 	Count int    `json:"count"`
-	Error string `json:"error"`
+	Error string `json:"error,omitempty"`
 }
 
-// GroupReq represents a Jobrequest group.
-type GroupReq struct {
-	GroupID string   `json:"group_id"`
-	Jobs    []JobReq `json:"jobs"`
+// GroupRequest represents a group of job requests.
+type GroupRequest struct {
+	GroupID string       `json:"group_id"`
+	Jobs    []JobRequest `json:"jobs"`
 }
 
-// GroupResp is the response sent to a group job request.
-type GroupResp struct {
-	GroupID string    `json:"group_id"`
-	Jobs    []JobResp `json:"jobs"`
+// GroupResponse represents the response for a group job request.
+type GroupResponse struct {
+	GroupID string        `json:"group_id"`
+	Jobs    []JobResponse `json:"jobs"`
 }
 
-// GroupStatusResp represents the status of a group job.
-type GroupStatusResp struct {
-	GroupID string          `json:"group_id"`
-	State   string          `json:"state"`
-	Jobs    []JobStatusResp `json:"jobs"`
+// GroupStatusResponse represents the status of a group job.
+type GroupStatusResponse struct {
+	GroupID string              `json:"group_id"`
+	State   string              `json:"state"`
+	Jobs    []JobStatusResponse `json:"jobs"`
 }
 
-// HTTPResp represents a container for generic outgoing HTTP
-// responses.
-type HTTPResp struct {
+// HTTPResponse represents a container for generic outgoing HTTP responses.
+type HTTPResponse struct {
 	Status  string      `json:"status"`
 	Message string      `json:"message,omitempty"`
 	Data    interface{} `json:"data"`
 }
+
+// NewJobRequest creates a new JobRequest with proper initialization.
+func NewJobRequest(taskName, jobID, queue, db string, eta *time.Time, retries, ttl int, args []string) JobRequest {
+	return JobRequest{
+		TaskName: taskName,
+		JobID:    jobID,
+		Queue:    queue,
+		ETA:      eta,
+		Retries:  retries,
+		TTL:      ttl,
+		Args:     args,
+		DB:       db,
+	}
+}
+
+// NewGroupRequest creates a new GroupRequest with proper initialization.
+func NewGroupRequest(groupID string, jobs []JobRequest) GroupRequest {
+	return GroupRequest{
+		GroupID: groupID,
+		Jobs:    jobs,
+	}
+}