The HR knowledge and basics of HR remain same, irrespective of the Industry. The working and the laws differ from Industry to industry... For example the Manufacturing have many more laws to consider than the Shops and Establishment.
So as far as you have the knowledge to deal with Unions and Govt. Officials and your basic HR knowledge is Strong and updated, there should not be any problem where in they should reject your canditure.
Kindly prepare your CV, where People Skills and Negotation Skills and the Basic HR knowledge is reflected in writing.
24th September 2015 From India, Mumbai