When Jonny Frostick realised he was having a heart attack this month, the first thing that occurred to the HSBC Holdings Plc contractor was: “I needed to meet with my manager tomorrow, this isn’t convenient.” Then he thought about funding for a project, his will, and finally, his wife. Frostick, who manages more than 20 employees working on regulatory data projects, chronicled his near-death experience in a viral LinkedIn post that had been viewed almost eight million times. The 45-year-old Briton is the latest financial employee to weigh in on the work-till-you-drop culture during a pandemic that’s obliterated the lines...