What is the role of PCS Advocates? A PCS Advocate is someone who, while not choosing to become a fully-fledged rep, is a 'voice' for PCS in the workplace. Many good members who turn up to meetings, help to convince colleagues of the value of PCS and generally encourage others to get involved in union activity, would be well suited to this role. Through a network of advocates PCS will be able to build it's strength and influence in the workplace. Find out more about becoming a PCS Advocate.