New York CNN Business  — 

Corporate America is getting serious about vaccines.

In the last week, companies from Disney to Walmart to Google have begun mandating their employees get shots to protect against Covid-19. Even famed restaurateur Danny Meyer said it’s not just his employees who must be vaccinated: He won’t serve customers in his restaurants without proof they’ve gotten the vaccine.

Momentum for vaccine mandates has been building, and President Joe Biden on Thursday announced a requirement that all federal employees and on-site contractors be vaccinated or submit to regular testing and mitigation requirements.

Throughout the week, a growing number of employers announced their own vaccine mandates: On Wednesday, Google and Facebook became the first two Silicon Valley giants to issue mandates of their own. Walmart and Disney joined the fray on Friday.

Here are the companies that have announced Covid-19 vaccine requirements for at least some of their employees.

Google

Google (GOOG) CEO Sundar Pichai sent an email to staff Wednesday announcing a vaccine requirement for employees who are coming back to the office. The policy would roll out in the United States in the coming weeks and in other regions in the following months as vaccines become more widely available, Pichai said. It’s not clear how Google (GOOG) plans to enforce the policy.

Facebook

All Facebook (FB) employees must get vaccinated before coming back to the office, the company announced Wednesday. “As our offices reopen, we will be requiring anyone coming to work at any of our US campuses to be vaccinated,” Lori Goler, Facebook (FB)’s VP of people, said in a statement. “We will have a process for those who cannot be vaccinated for medical or other reasons and will be evaluating our approach in other regions as the situation evolves,” she added.

Netflix

Netflix (NFLX) is requiring Covid-19 vaccines for the casts of all its US productions, as well as the people who come in contact with them, according to Deadline. Last week, Hollywood unions and major studios hammered out return-to-work protocols that include “the option to implement mandatory vaccination policies for casts and crew in Zone A” on a production-by-production basis. “Zone A” consists of actors and the people who come in close proximity to them.

Walmart

Walmart (WMT), the nation’s largest retailer, said all its US-based corporate employees must be vaccinated by October 4, according to a Friday memo from Doug McMillon, the company’s president and CEO.

This mandate does not apply to Walmart’s store employees, but it will soon implement a new process to verify their vaccine status, and is offering employees the chance to get vaccinated while on the clock (along with up to three days paid leave for any reaction to the shot). The company is also doubling its current vaccine incentive to $150; current employees who get vaccinated and new employees who were vaccinated before they started at Walmart are all eligible to receive the bonus.

Disney

Disney (DIS) is requiring all its salaried and non-union hourly employees in the US to be vaccinated. Workers who are working on-site but are not yet vaccinated must get their shots within the next 60 days, according to a statement from the company to CNN Business. Employees who are still working from home must provide the company with proof of their vaccination before returning to work. The company also said it has started discussing vaccine mandates with the unions representing its workers. The company is also mandating that all new hires be fully vaccinated before beginning their jobs.

BlackRock

BlackRock (BAAPX), the world’s largest asset manager, is currently allowing only vaccinated employees to return to the office, a spokesperson for the company said. This decision is a policy adjustment based on employee feedback and an employee survey, the spokesperson said. Starting in September the company will have a “hybrid model,” with some vaccinated employees working from the office and others from home, the spokesperson added. The company is planning to share an updated policy for unvaccinated employees later in the summer.

Morgan Stanley

Morgan Stanley (MS)’s New York office is banning all unvaccinated staff and clients from entering its headquarters. All employees who work in buildings with a “large employee presence” were required to confirm their vaccination status by July 1, according to a company memo to employees.

Saks Fifth Avenue

Luxury department store chain Saks Fifth Avenue is requiring that all employees be vaccinated, The New York Times reported. “We need to be much more office-based,” and “the default needs to be our office,” CEO Marc Metrick told the Times.

The Washington Post

All new hires and current employees of the Washington Post will be required to demonstrate proof of full Covid-19 vaccinations, the company’s publisher and CEO Fred Ryan said in a memo to employees Tuesday. Ryan stated that the requirement is a “condition of employment” beginning with the publication’s return to the office on September 13.

Union Square Hospitality Group

At Union Square Hospitality Group, which operates restaurants and event businesses in New York and other US cities, all employees and customers must be able to prove they’re vaccinated — a rule that will go into effect September 7. CEO Meyer told CNN’s Poppy Harlow Thursday that he would call it a “company policy” instead of a “mandate”.

Ascension Health

Ascension Health announced that it will require Covid-19 vaccinations for all of its employees “for the safety of patients and visitors, our associates, our families and loved ones, and the community,” according to a Tuesday press release from the company. “Ascension will require that all associates be vaccinated against COVID-19, whether or not they provide direct patient care, and whether they work in our sites of care or remotely,” the company said in the statement.

Lyft

As of August 2, all employees working in Lyft’s offices are required to be vaccinated.

In an email sent to staffers that was viewed by CNN Business, Lyft (LYFT) CEO Logan Green also said the majority of the company’s offices in the US will now return to the office on February 2, 2022, a six-month extension to the company’s original return-to-office date. Lyft (LYFT) informed team members several weeks ago that they will be required to submit proof of vaccination in order to return to the office, a spokesperson told CNN Business.

Uber

If Uber (UBER) employees want to come back to the office, they must be fully vaccinated, company CEO Dara Khosrowshahi said in a memo to employees Thursday. Uber (UBER) also pushed back its global “return to office” date to October 25, and said it will provide updates by September 30 if anything changes. Anyone coming into the office must wear a mask for the time being, regardless of their vaccination status, Khosrowshahi said.

Twitter

Twitter (TWTR) was already requiring employees who returned to the office to show proof of vaccination, but the company on Wednesday took the additional step of closing its offices in New York and San Francisco completely and paused further office reopenings.

The company made that call “after careful consideration of the CDC’s updated guidelines, and in light of current conditions,” a spokesperson told CNN Business. “We’re continuing to closely monitor local conditions and make necessary changes that prioritize the health and safety of our Tweeps.”

Goldman Sachs

Goldman Sachs (GS) employees are currently required to report their vaccine status to the company, a policy that was instituted on June 10. Failure to do so comes with specific consequences. “If you do not report your vaccine status to Goldman, your ID card will not work to enter the building,” a spokesperson for the company told CNN Business. Unvaccinated employees are required to get a rapid Covid-19 test on site at the company’s headquarters and will be tested regularly, the spokesperson added. Employees who test positive will immediately be asked to leave the building.

Jefferies

Jefferies (JEF) is allowing only vaccinated employees into the office according to a memo that the company’s CEO and president sent to employees — provided they’re past the appropriate waiting period for full vaccine efficacy. “We require that, after Labor Day, anyone who is not fully vaccinated should continue to work from home,” the memo said.

Tyson

Tyson, one of the largest food companies in the world, will mandate vaccines for its US workforce. Employees at Tyson’s US offices will need to be fully vaccinated by October 1, and all other frontline employees will be required to get fully vaccinated by November 1, subject to negotiations with unions.

The company, whose brands include Hillshire Farm and Jimmy Dean, said the move makes it the largest US food company to require vaccines for its entire workforce. Almost half of its 120,000 US employees have already been vaccinated.

Tyson is offering $200 incentives for employees once they are fully vaccinated, and it will make exceptions for workers with medical or religious accommodations.

Walgreens

Walgreens is requiring vaccines for all of its corporate employees in the United States. Team members based in the US will be “required to be fully vaccinated by September 30 with any of the vaccines available,” according to a statement from the company. Employees who are “unable to be vaccinated” are required to “enroll in a Covid-19 testing program.”

CNN’s Rishi Iyengar, Sara O’Brien, Matt Egan and Moira Ritter contributed to this report.