FYI the strike by JK staff is in effect - indefinitely. It is only happening in Mallorca, on Mondays and Fridays, and only by corporate employees (i.e., in the office). It's in response to JK's decision to relocate their headquarters from Palma to Barcelona and the relocation plans offered to employees.

Also FYI, the source linked above (ABC) is not exactly the most reliable source. They love to stir the pot when it comes to unions and workers.