Electronic health record giant Epic Systems has cracked Glassdoor's list of top 20 companies that provide their employees unique benefits and perks.

Epic joined other well-known businesses in the field of healthcare IT as well as business titans such as Netflix, Facebook, Google and Disney.

Glassdoor, one of the three largest U.S. job websites, picked companies with unique benefits by analyzing hundreds of thousands of reviews employees posted on its website since August 2014. Among some of the benefits: "Panda Fridays," improv classes, ski slope passes and a $30-a-month book allowance.

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The Glassdoor analysis puts Epic at No. 16 on the list of top 20 companies, with an overall benefit rating of 4.3 out of 5.

It's credited for, among other perks, enabling its employees – once they've worked for the company five years – to take a paid four-week sabbatical to pursue their creative talents.

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Other firms in the healthcare space are on the list. Accenture, touted for its commitment to LGBT rights, covers gender reassignment for its employees. PwC offers its employees $1,200 per year for student loan debt reimbursement. Salesforce offers six days of paid volunteer time off each year, and $1,000 for employees to donate to the charities of their choice.

Other tech companies in Glassdoor's Top 20 include Twitter, which offers on-site acupuncture and improv classes; Adobe, which shuts down the company for a week each in winter and summer, and Airbnb, which gives employees an annual stipend of $2,000 to travel and stay in an Airbnb listing anywhere worldwide.

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