val.rb

class Val

  def self.check!(klass)
    klass.find_each do |s|
      begin
        if !s.valid?
          message = s.errors.full_messages.to_sentence
          throw "#{klass.to_s} #{s.id} #{message}"
        end
      rescue => e
        Raven.capture_exception(e)
      end
    end; true
  end

end

validation_worker.rb

class ValidationWorker

  def perform
    # do all your records
    Val.check!(User)
  end

end