Top 10 ranking: No. 3 for training The flexible work arrangements program is a top benefit for employees at this not-for-profit science and engineering organization in Bedford, Mass. Subject to management approval, employees can make use of flextime, teleworking, part-time employment and job sharing on an occasional or ongoing basis. Both managers and employees receive training about the program. On-site amenities The company offers a slew of on-campus conveniences, including haircuts, car detailing, dry cleaning and fitness centers. The company's retirement program, a defined contribution plan, is used by 99% of employees. Mitre provides matching to both the basic level of employee contributions and the optional voluntary contributions, with the company contributing up to 11% of salary. There are more than 100 available investment options for employees to choose from, a loan feature and a variety of payment options (ranging from lump sums to lifetime annuities) upon retirement. The program also features a phased retirement option, which allows employees who are 60 or older to work a part-time schedule and simultaneously access a portion of their accumulated retirement account balances.