Some Apple employees are pushing back on CEO Tim Cook’s announcement that they may be expected in the office several days a week, according to a report in The Verge, and published on Yahoo! Finance. 

The decision is in stark contrast with other tech giants, including Twitter and Facebook, as the companies have told employees they can work from home forever.

But it is consistent with CoreNet Global’s own research that indicates time spent in the office will constitute roughly one-half of the work week, while time spent at home and/or at other locations would make up the rest. 

And that isn’t good enough for the Apple employees who wrote the following in a letter, according to the report:

“We would like to take the opportunity to communicate a growing concern among our colleagues,” the employees’ letter obtained by The Verge says. “Apple’s remote/location-flexible work policy, and the communication around it, have already forced some of our colleagues to quit. Without the inclusivity that flexibility brings, many of us feel we have to choose between either a combination of our families, our well-being, and being empowered to do our best work, or being a part of Apple.”