Prime Minister Naoto Kan is expected to face mounting calls to resign or call a snap election in order to get the fiscal 2011 budget bills passed on time, experts say.

To enact the budget on April 1, the beginning of fiscal 2011, Kan's Cabinet must ensure the budget and related bills clear the Lower House at least by the beginning of March, which will give it time to make revisions.

The ruling Democratic Party of Japan is desperately trying to solicit cooperation from the opposition camp to pass the bills and has offered to revise segments of the budget to accommodate other opinions.