20 incredible perks companies like Airbnb, Facebook, and Google offer their employees

REI encourages its employees to get outside by offering two paid days off each year, called "Yay Days," to enjoy their favorite outside activity.

Overall benefits rating: 4.0 / 5

Salesforce employees receive six days of paid volunteer time off a year, as well as $1,000 a year to donate to a charity of their choice.

Overall benefits rating: 4.5 / 5

Spotify provides six months of paid parental leave, plus one month of flexible work options for parents returning to the office. The company also covers costs for egg freezing and fertility assistance.

Overall benefits rating: 4.2 / 5

World Wildlife Fund employees take Friday off every other week, also known as "Panda Fridays" at the nonprofit.

Overall benefits rating: 4.5 / 5

Airbnb, the Best Place to Work in 2016, gives its employees an annual stipend of $2,000 to travel and stay in an Airbnb listing anywhere in the world.

Overall benefits rating: 4.6 / 5

PwC offers its employees $1,200 a year reimbursement on student-loan debt.

Overall benefits rating: 4.0 / 5

Pinterest provides a unique take on the parental-leave policy by offering three paid months off, plus a month of part-time hours, as well as two counseling sessions to create a plan to reenter the workplace.

Overall benefits rating: 4.7 / 5

Burton employees receive season ski passes and "snow days" to hit the slopes after a big snowfall.

Overall benefits rating: 4.0 / 5

Cloud-communications platform Twilio offers employees a Kindle plus $30 a month to purchase books.

Overall benefits rating: 4.0 / 5

Twitter is well-known for providing perks such as three catered meals a day, but some lesser-known benefits include on-site acupuncture and improv classes.

Overall benefits rating: 4.3 / 5

Accenture covers gender reassignment for their employees as part of its commitment to LGBTQ rights and diversity.

Overall benefits rating: 4.0 / 5

Walt Disney Company wants its employees to enjoy the "Happiest Place on Earth" — so it offers employees (and their friends and families) free admission to their parks, as well as discounts on hotels and merchandise.

Overall benefits rating: 4.0 / 5

Facebook provides $4,000 in "Baby Cash" to employees with a newborn.

Overall benefits rating: 4.7 / 5

Evernote hosts classes through "Evernote Academy," which offers team-building courses like macaroon baking.

Overall benefits rating: 4.3 / 5

Epic Systems Corporation offers employees a paid four-week sabbatical to pursue their creative talents after five years at the company.

­Overall benefits rating: 4.3 / 5

Adobe shuts down the entire company for one week in December and one week over the summer.

Overall benefits rating: 4.6 / 5

Asana employees have access to executive- and-life coaching services outside of the company.

Overall benefits rating: 4.9 / 5

Zillow pays for overnight shipping of breast milk when a new mom is traveling.

Overall benefits rating: 4.5 / 5

Google provides the surviving spouse or partner of a deceased employee 50% of their salary for the next 10 years.

Overall benefits rating: 4.6 / 5