Just a para from a longer article I have just found and posted on the NATS for sale forum....
At the same time, Deakin hopes to take the opportunity to double the work force's shareholding to 10% to better engage the 5,000 workers and ensure their interests are more closely aligned with the company's goals. Even though 80% to 90% of its employees are unionized, NATS hasn't suffered industrial action since 1981.