The head of a civil service union federation in Hong Kong has warned that tighter disciplinary action risks becoming excessive as the government seeks to revise the penalty system to handle underperforming workers this year.Leung Chau-ting, chairman of the Federation of Civil Service Unions, was responding to the Civil Service Bureau’s reply to a lawmaker’s inquiry this week about revising the regulations to further optimise the disciplinary mechanism, including tightening rules on withholding...