diff --git a/internal/processor/letter_outgoing_processor.go b/internal/processor/letter_outgoing_processor.go
index 1104869..20bc03a 100644
--- a/internal/processor/letter_outgoing_processor.go
+++ b/internal/processor/letter_outgoing_processor.go
@@ -573,12 +573,47 @@ func (p *LetterOutgoingProcessorImpl) getApprovalsByStepForRevision(ctx context.
 }
 
 // isStepCompleted checks if all required approvals in a step are approved
+// For parallel groups, at least one approval per group must be completed
 func (p *LetterOutgoingProcessorImpl) isStepCompleted(stepApprovals []entities.LetterOutgoingApproval) bool {
+	// Group approvals by parallel group
+	approvalsByParallelGroup := make(map[int][]entities.LetterOutgoingApproval)
 	for _, approval := range stepApprovals {
-		if approval.IsRequired && approval.Status != entities.ApprovalStatusApproved {
+		approvalsByParallelGroup[approval.ParallelGroup] = append(
+			approvalsByParallelGroup[approval.ParallelGroup], 
+			approval,
+		)
+	}
+	
+	// Check each parallel group
+	for _, groupApprovals := range approvalsByParallelGroup {
+		// For each parallel group, check if it has at least one approved
+		groupHasApproval := false
+		hasRequiredPending := false
+		
+		for _, approval := range groupApprovals {
+			if approval.Status == entities.ApprovalStatusApproved {
+				groupHasApproval = true
+			}
+			if approval.IsRequired && approval.Status != entities.ApprovalStatusApproved {
+				hasRequiredPending = true
+			}
+		}
+		
+		// If this group has required approvals that are still pending, step is not complete
+		if hasRequiredPending {
 			return false
 		}
+		
+		// If this group has no approvals at all and contains required approvals, step is not complete
+		if !groupHasApproval {
+			for _, approval := range groupApprovals {
+				if approval.IsRequired {
+					return false
+				}
+			}
+		}
 	}
+	
 	return true
 }
 
diff --git a/internal/service/letter_outgoing_service.go b/internal/service/letter_outgoing_service.go
index 1091115..8cefb1f 100644
--- a/internal/service/letter_outgoing_service.go
+++ b/internal/service/letter_outgoing_service.go
@@ -997,45 +997,72 @@ func (s *LetterOutgoingServiceImpl) GetLetterApprovalInfo(ctx context.Context, l
 		return nil, err
 	}
 
-	// Group approvals by step order to understand the workflow
-	approvalsByStep := make(map[int][]entities.LetterOutgoingApproval)
+	// Group approvals by step order and parallel group to understand the workflow
+	approvalsByStepAndGroup := make(map[int]map[int][]entities.LetterOutgoingApproval)
 	for _, approval := range approvals {
-		approvalsByStep[approval.StepOrder] = append(approvalsByStep[approval.StepOrder], approval)
+		if approvalsByStepAndGroup[approval.StepOrder] == nil {
+			approvalsByStepAndGroup[approval.StepOrder] = make(map[int][]entities.LetterOutgoingApproval)
+		}
+		approvalsByStepAndGroup[approval.StepOrder][approval.ParallelGroup] = append(
+			approvalsByStepAndGroup[approval.StepOrder][approval.ParallelGroup], 
+			approval,
+		)
 	}
 
 	// Find the current active step (lowest step order with pending approvals)
 	var currentStepOrder int = -1
 	var userApproval *entities.LetterOutgoingApproval
-	var isApproverOnActiveStep bool
 	var canApprove bool
 
 	// Find the minimum step order that has pending approvals
-	for stepOrder, stepApprovals := range approvalsByStep {
-		hasPending := false
-		for _, approval := range stepApprovals {
-			if approval.Status == entities.ApprovalStatusPending {
-				hasPending = true
-				// Check if this user is an approver for this pending approval
-				if approval.ApproverID != nil && *approval.ApproverID == userID {
-					if currentStepOrder == -1 || stepOrder < currentStepOrder {
-						currentStepOrder = stepOrder
-						userApproval = &approval
-						isApproverOnActiveStep = true
+	for stepOrder, groupApprovals := range approvalsByStepAndGroup {
+		stepHasPending := false
+		
+		// Check each parallel group in this step
+		for _, groupMembers := range groupApprovals {
+			groupHasPending := false
+			var userApprovalInGroup *entities.LetterOutgoingApproval
+			
+			// Check if this group has pending approvals and if user is in this group
+			for i := range groupMembers {
+				approval := groupMembers[i]
+				if approval.Status == entities.ApprovalStatusPending {
+					groupHasPending = true
+					stepHasPending = true
+					
+					// Check if this user is an approver in this group
+					if approval.ApproverID != nil && *approval.ApproverID == userID {
+						userApprovalInGroup = &approval
 					}
 				}
 			}
+			
+			// If this is the earliest step with pending approvals and user is in a pending group
+			if groupHasPending && userApprovalInGroup != nil {
+				if currentStepOrder == -1 || stepOrder < currentStepOrder {
+					currentStepOrder = stepOrder
+					userApproval = userApprovalInGroup
+					// User can approve if they're in a parallel group with pending approvals at the current active step
+					canApprove = true
+				} else if stepOrder == currentStepOrder {
+					// Same step order - user can still approve if in parallel group
+					userApproval = userApprovalInGroup
+					canApprove = true
+				}
+			}
 		}
-		// Track the lowest pending step
-		if hasPending && (currentStepOrder == -1 || stepOrder < currentStepOrder) {
+		
+		// Track the lowest step with pending approvals
+		if stepHasPending && (currentStepOrder == -1 || stepOrder < currentStepOrder) {
 			currentStepOrder = stepOrder
+			// Reset canApprove if we found a lower step and user is not in it
+			if userApproval == nil || userApproval.StepOrder != stepOrder {
+				canApprove = false
+				userApproval = nil
+			}
 		}
 	}
 
-	// User can approve if they have a pending approval on the current active step
-	if isApproverOnActiveStep && userApproval != nil && userApproval.Status == entities.ApprovalStatusPending {
-		canApprove = true
-	}
-
 	// Build actions based on eligibility
 	var actions []contract.ApprovalAction
 	if canApprove && userApproval != nil {
@@ -1095,7 +1122,7 @@ func (s *LetterOutgoingServiceImpl) GetLetterApprovalInfo(ctx context.Context, l
 	}
 
 	info := &contract.LetterApprovalInfoResponse{
-		IsApproverOnActiveStep: isApproverOnActiveStep,
+		IsApproverOnActiveStep: canApprove, // User can approve means they're on the active step
 		DecisionStatus:         decisionStatus,
 		CanApprove:             canApprove,
 		Actions:                actions,