Imprivata (Lexington, Mass.). Imprivata, a health IT company, enables healthcare providers to access and transact patient health information. For the fifth consecutive year, the company was named to The Boston Globe's "Top Places to Work" in 2016. Imprivata boasts a flexible time off policy, which doesn't restrict employees' sick, personal or vacation days. It also offers tuition assistance with up to $5,250 reimbursement each year, encourages internal promotional opportunities and offers employees the ability to transfer between departments.