Some pharmacy staff from Walgreens and other drugstore chains are planning to walk out this week in the latest pushback against what they call unsafe working conditions that put both employees and patients at risk.

Organizers of the effort and some pharmacy employees told CNBC they hope the work stoppage will push companies to make meaningful changes to address the long-standing grievances of many retail pharmacy staff, who have complained about having to grapple with what they describe as understaffed teams, insufficient pay and increasing work expectations imposed by corporate management.

The walkout, which organizers have dubbed “Pharmageddon,” will occur Monday through Wednesday across different retail pharmacy locations nationwide, organizers of the effort told CNBC.