Prime Minister Shinzo Abe's ruling coalition was left alone to vote after all main opposition parties walked out of the chamber in protest, a move intended to reflect widespread public anger over the legislation.
"The security situation surrounding Japan is increasingly severe," Abe told reporters after the vote, in an apparent reference to the rise of China.
"These bills are necessary to protect Japanese people's lives and prevent a war before it breaks out."
There were scuffles as police pushed protestors back, and two men in their 60s were arrested on suspicion of assaulting officers, local media said.
Demonstrations in Japan are usually small and very orderly, but the issue has galvanised opposition across a wide swathe of the population.
The bills -- a hotchpotch of updates to existing provisions that will allow, amongst other things, Japan's military to take part in non-United Nations peacekeeping missions -- now go to the upper chamber.
However, the lower house can overturn those changes with a two-thirds majority -- well within the scope of what Abe controls.
The prime minister, a robust nationalist, wants what he calls a normalisation of Japan's military posture, which has been constrained by a constitution imposed by US occupiers after World War II.
Unable to muster support to amend clauses enshrining pacifism, Abe opted instead to re-interpret the document for the purpose of his bills, ignoring warnings from scholars and lawyers that his bills are unconstitutional.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
