New York (CNN Business)It's been 15 long months since millions of workers left their offices and set up makeshift desks at home.

But as Covid-19 cases decline and more Americans get vaccinated, companies are beginning to establish protocols about how, and whether, office life will resume.

For Wall Street banks, the growing consensus is that everyone ought to be back at their desks by Labor Day — though Citibank said it's embracing more of a hybrid model. Meanwhile tech companies are taking a far more flexible approach.

Why Wall Street is in such a rush to get workers back to the office

Why Wall Street is in such a rush to get workers back to the office

As for workers themselves, more than half of those surveyed in a recent Pew Research Center survey said that, given the choice, they would want to keep working from home even after the pandemic subsides.

Here's how some of the biggest names in tech and finance are handling the return to office life.

Apple

Apple (AAPL) expects employees to return to their offices three days a week come September, CEO Tim Cook wrote in an email to employees earlier this month, according to The Verge.

"For all that we've been able to achieve while many of us have been separated, the truth is that there has been something essential missing from this past year: each other," Cook said in the email. "Video conference calling has narrowed the distance between us, to be sure, but there are things it simply cannot replicate."