The Bloomberg piece also explains that
"Full-time workers typically get about a quarter of their yearly wages in two lump payments, the amount of which is set at the start of each business year. The so-called bonuses give companies room to adjust labor costs when profits fall. Summer payments will plummet an average of 7.3 percent this year, according to an estimate last week by Tokyo’s Dai-Ichi Life Research Institute. The drop would be the biggest since comparable data became available in 1991".
It will be difficult for the country to see positive GDP growth given both declining wages and declining exports. Japanese consumers will be spending their funds carefully to ensure that they can make ends meet when they expect further pay cuts.