Dear friend,
The decision of the employer styled as " Down sizing", " Right sizing", " Structural restructuring" or by any other term is nothing but the consequential forced and involuntary exit or unemployment of a certain no of existing employees in the organization for no fault of them. The Industrial Disputes Act,1947 calls it as " retrenchment " and defines it u/s 2(oo) in relation to the particular category of employees falling within the definition of the term " workman "u/s 2(s) and imposes certain restrictions in favour of the employees under sections 25-F and 25-N. As regards other employees, it is the consequential violation of the service regulations if any applicable or the breach of the terms of the contract of employment that only can empower the individual employee to agitate legally against such involuntary termination. The question of comparison would arise only when the employer adopts the tactics of pick and choose by keeping the juniors in and sending the senior out or for feigned reasons. Better search web-sites like India kanoon .org for case laws.