Parliament on Wednesday approved three key labour reform bills that will remove impediments for winding up of companies and will allow firms with up to 300 workers to fire staff without government permission. The bills were passed in the absence of opposition parties. Congress, the Left and other opposition parties are boycotting the session over the suspension of eight MPs. Amidst this, the Rajya Sabha passed the three labour codes on industrial relations, social security and occupational safety by voice vote. The three codes were passed by the Lok Sabha on Tuesday and will now be sent to the President for his assent.