Definitely the retirement plan and the health insurance cost.
The international package is decent although recently reduced. Unfortunately because the benefits are decent, PSI uses that as an excuse to keep salaries low.
Standard benefits. Nice that they give $500 per year for fitness (you do get taxed on it though... twice). No matter what HR says, work from home is not a real benefit they provide. If your boss doesn't want you to work from home then no matter what you cannot work from home. No opps for professional development, trainings or otherwise. They don't pay for any certifications or give tuition benefits (though they will force you to get a degree or not be promoted after APM level).
The $500 annual wellness benefit is an employee favorite! The pension for U.S. employees is generous, but the vesting period is years too long...
Pros: work schedule flexibility, wellness programs
Childcare and health benefits are the best. They also provide $500 for your gym membership. They have very nice programs. If you want to quit smoking they provide reimbursement for patches.
Maternity package is poor, ranges from 0-6 weeks paid leave, depending on your length of service. Surprising given the mission. Pension plan fully vests only after 5 years.
Overall, the benefits are great but shame on them for not offering Fertility. Especially based on the work that is done in the field
Commuting is expensive and it would be nice to have a subsidy.
Insurance covers dental, vision, and medical. Time off is flexible, and it's easy to accrue time. PSI is respectful of time taken off.
List based on reports from current and former employees. It may not be complete.