Japan’s government wants to bring in a three-year limit on temporary workers.
But the opposition objects, saying the law will allow businesses to fire temporary workers after three years instead of hiring them.
Opposition MPs clashed with Hiromichi Watanabe, the head of the welfare and labour committee in the lower house, and tried to grab his speech.
They tried to push their way towards him as he attempted to end discussion.
Katsuya Okada, the head of the opposition Democratic Party, said they “couldn’t help but resort to such action” because the governing Liberal Democratic Party was trying to “ram” the measure through.
A vote on the bill was postponed until next week.
Fights in Japan’s parliament are rare, although one in May 1960 involved at least 300 Japanese MPs.