The trade union for German construction workers has called for strikes beginning on Monday, starting with workers in the north-western German state of Lower Saxony. The trade union IG BAU announced the strike plans in Frankfurt on Friday. Further selective strikes will take place throughout Germany from Tuesday, a trade union spokesman told dpa. About 930,000 workers in the construction industry are represented by the union. The trade union has been demanding pay raises and other benefits in stalled collective bargaining talks with employers in the construction industry. Lower Saxony was chose…