Fortune 1000 rank: 171
Best Companies rank: 40
No. of U.S. employees: 13,554
Most common salaried job (Avg. Pay):
What makes it so great? Hard-working employees at the biotech leader also get lots of time to recharge: Vacation begins accruing upon starting, totaling three weeks after one year, plus an additional 17 paid holidays--the highest on the list.