MARKETWATCH - Nov 6 - Rules on workplace relationships are becoming increasingly common in the #MeToo era. The firing of McDonald's CEO Steve Easterbrook because of a consensual relationship with an employee is just the latest reminder that office relationships are tricky terrain, and can end badly if they aren't handled carefully. Some companies have procedures for disclosing relationships, but others outright ban it. Almost 80% of companies frown on subordinate-manager dating, according to a survey by the outplacement firm Challenger, Gray & Christmas. That's up from 70% in January 2018. Dating analyst Mark Brooks said he doesn't know of a single app that proactively helps users spot co-workers and then block them. "This seems like a logical and valuable feature, and perhaps a dating app will jump on it now. Simply adding a question, 'Where do you work?' and 'Are you allowed to date co-workers?' would help dating apps protect users from the fate of the McDonald’s CEO," Brooks said. "Sour relationships breed sour workplaces. Unfortunately, there seems to be a mismatch between dating-app features and guarding users against this kind of faux pas," he added.