Question

how are public and private sector interlinked to each other​

Answer 1

The evolution of public sector wages is decoupled from that of the private sector. Using data for number of OECD countries, we find: (i) a strong and extremely robust positive annual contemporaneous correlation of public and private sector wages over the business cycle; (ii) evidence of co-movement of these variables over the medium and long run. 

Answer 2

with transportation raw material and all of those it is interlinked