Workers who clean and maintain office buildings in Philadelphia are unionized, earn a reasonable wage, and receive good health insurance. However, workers are concerned that their benefits are at risk as they have struggled to establish a new contract with the organization that negotiates on their manger’s behalf. The current contract expires on Wednesday, and workers may strike on Tuesday if an agreement is not reached by then.
See "Why 3,000 workers who clean Philadelphia’s business towers may strike Tuesday night", Juliana Feliciano Reyes, The Philadelphia Inquirer, October 15, 2019