Can my PhD main supervisor claim the "corresponding author" role for papers from my thesis even if he didn't provide much support during my study? I graduated last year and is now a postdoc in another university. My current boss (who was also in my PhD supervision team, but not the main supervisor) encouraged me to publish parts of my thesis as a journal paper. I wrote the paper during working hours and my current boss gave me guidance and advice. My plan was to include others who were in the supervision team as co-authors and have my current boss as the corresponding author. However, my main supervisor was pissed off when he learnt about it. He said he should be the corresponding authors for all the papers from my thesis. Is what he said correct? Is it a must? Actually the main supervisor gave me minimal support during my study and I don't think he deserves to be the corresponding author. The funding for my study was provided by the government.
In general, no.

There might be exceptions, but those should have been communicated to you in advance by your supervisor, rather than after-the-fact.