Nationwide union action in Belgium will halt all flight operations at Brussels South Charleroi Airport due to protests against government economic reforms affecting pensions and working conditions. Major trade unions will demonstrate on May 12, leading to significant staff reductions and safety concerns. Passengers will be contacted for rebookings or refunds. Brussels Airport may also face cancellations. The strikers demand better working conditions, a fair tax system, and automatic pay rises. Public transport in Brussels will experience disruptions, with a partial service maintained.