Five New Power Party (NPP) legislators yesterday began a hunger strike in front of the Presidential Office Building in Taipei, calling on President Tsai Ing-wen (蔡英文), in her capacity as Democratic Progressive Party (DPP) chairperson, to order the DPP caucus to retract draft amendments to the Labor Standards Act (勞動基準法) from bills to be reviewed during an extraordinary legislative session that began yesterday.