Workers Together Federation (WTF) is a union representing employees in the textile industry. For eight weeks, WTF and various textile companies held meetings to discuss wage increases. WTF demands a 12 percent increase for its members, whereas the employer (companies) is only prepared to offer a 4 percent rise. WTF advises its members to stop doing overtime work until the wage dispute becomes resolved. Define the nature of the industrial action taken by members of WTF and discuss the circumstances under which the law prohibits it.