diff --git a/app/models/user_onboarding_progress.rb b/app/models/user_onboarding_progress.rb
index ac4dd8a..29bd036 100644
--- a/app/models/user_onboarding_progress.rb
+++ b/app/models/user_onboarding_progress.rb
@@ -1,5 +1,86 @@
 class UserOnboardingProgress < ApplicationRecord
+  STEP_KEYS = %w[
+    created_technician
+    created_customer
+    created_first_work_order
+    moved_work_order_status
+    viewed_reports
+  ].freeze
+
   belongs_to :user
 
   validates :user_id, presence: true, uniqueness: true
+  validates :last_seen_step, inclusion: { in: STEP_KEYS }, allow_nil: true
+
+  before_validation :normalize_completed_steps!
+
+  def complete_step!(step_key)
+    key = normalize_step_key(step_key)
+
+    steps = (completed_steps || {}).dup
+    step_already_completed = steps[key] == true
+    steps[key] = true
+
+    self.completed_steps = steps
+    self.last_seen_step = key
+    self.finished_at = Time.current if finished_all_steps?
+
+    save! if changed?
+
+    !step_already_completed
+  end
+
+  def completed_step?(step_key)
+    key = normalize_step_key(step_key)
+    completed_steps.fetch(key, false) == true
+  end
+
+  def completed_steps_count
+    completed_step_keys.count
+  end
+
+  def progress_percentage
+    return 0 if STEP_KEYS.empty?
+
+    ((completed_steps_count.to_f / STEP_KEYS.size) * 100).round
+  end
+
+  def dismiss!
+    update!(dismissed_at: Time.current)
+  end
+
+  def resume!
+    update!(dismissed_at: nil)
+  end
+
+  def finish!
+    update!(finished_at: Time.current)
+  end
+
+  def finished_all_steps?
+    (STEP_KEYS - completed_step_keys).empty?
+  end
+
+  private
+
+  def completed_step_keys
+    completed_steps
+      .select { |step, done| STEP_KEYS.include?(step) && done == true }
+      .keys
+  end
+
+  def normalize_completed_steps!
+    self.completed_steps = (completed_steps || {})
+      .to_h
+      .transform_keys(&:to_s)
+      .slice(*STEP_KEYS)
+      .transform_values { |value| value == true }
+  end
+
+  def normalize_step_key(step_key)
+    key = step_key.to_s
+    return key if STEP_KEYS.include?(key)
+
+    raise ArgumentError, "Invalid onboarding step: #{step_key}"
+  end
 end