Solution:The functions of trade unions can be broadly classified into three type i.e. • Militant functions (protective)
• Fraternal functions (positive)
• Intramural functions-
It refers to welfare schemes & activities within the framework of factory premises (safety, secure working environment, minimum wages, minimum working hours and leave with wages).
• Extramural functions -
It refers to the welfare schemes outside the factory premises (medical assistance, health care education). Hence, extension of medical facilities during sickness and casualties is not intramural functions of trade unions actually, it is an extramural function.