Americans wrestling with religious conflicts in the workplace need to start by doing some math.

Right now, about 157 million Americans work fulltime. Meanwhile, a 2013 study by the Tanenbaum Center for Interreligious Understanding found that 36 percent of workers surveyed said they had experienced religious discrimination at work or witnessed this discrimination happening to someone else.

This sobering trend "affects all groups, including evangelical Christians reporting high levels of discrimination. Muslims, Jewish people and people with no affiliation also experience discrimination on the basis of religion or belief," said Brian Grim of the Religious Freedom & Business Foundation in Annapolis, Md. He led a panel on faith-friendly workplaces during a recent religious liberty conference at Yeshiva University in New York City.It was cosponsored by the International Center for Law and Religious Studies at Brigham Young University.

"If you turn that into numbers," said Grim, this means "36 percent of the American workforce is 50 million people. That's a big, big issue."

These conflicts cannot be ignored. For starters, religious institutions and "faith-friendly businesses" contribute $1.2 trillion annually to the U.S. economy, said Grim. And while headlines focus on rising numbers of "Nones" -- the religiously unaffiliated -- in America, birth rates and religious-conversion trends indicate that the "religiously affiliated population of the world is going to outgrow the religiously unaffiliated by a factor of 23 to 1. … We're going to have a much more religious workplace and much more religious marketplaces."

Meanwhile, some economic powers -- China, India, Russia, Turkey and France, for example -- have increased restrictions on people's "freedom to practice their faith, change their faith or have no faith at all," he said. This often causes violence that is "bad for business. It's good for businesses that produce bullets and bombs, unfortunately."

Corporate leaders in have addressed some diversity issues, such as discrimination based on gender or sexual orientation, but "religion is the next big issue that they need to be looking at," said Grim. Last year, he noted, complaints to the Equal Employment Opportunity Commission about religious discrimination outnumbered LGBTQ cases nearly 2-1.

Grim asked this big question: "What is the right way to … come out of the closet about your faith at work?"