A number of factory workers in Noida, a suburb of Delhi, demanding an increase in wages threw stones at cops, a day after violent protests led to massive traffic jams at multiple locations in Noida and adjoining areas. The Uttar Pradesh government has hiked minimum wages across worker categories following unrest in Noida, with revised rates coming into effect from April 1 retrospectively, officials said on Tuesday. The decision follows consultations with employers' bodies and labour organisations. The government said suggestions and objections were examined to ensure a "balanced and practical" outcome.