The topic "Perceptions as moderators of the relationship between OCB and organizational restructiuring. So basically I need instruments to measure perceptions, OCB and Organizational restructuring. "
I would recommend reading the following article which can be found in Googol Scholar:
William Mckinley and Andreas Georg Scherer (2000) Some Unanticipated Consequences of Organizational Restructuring, Academy of Management Review Vol. 25, No. 4. https://doi.org/10.5465/amr.2000.3707703.
Hola el instrumento va depender del modelo si vas a buscar experiencias ya que la percepción puede ser cualitativa puede ser con preguntas, si me mandas los objetivos te puedo ayudar con las preguntas. Saludos cordiales