Per diem/expenses: Our department requires us to pay for our travel expenses using our personal credit cards and we get reimbursed 2-3 weeks later. Never have any problems paying my AMEX in full each month. It was an uncomfortable situation when I first started but I'm used to it now. We don't have any limits on our expenses. We are told to spend as if it is our own money and haven't had any problems in 2.5 years.

Bonuses: For any flying in excess of 17 days/month and/or in excess of 50 hours/month our bonus increases a certain amount in addition to our annual bonus. My annual bonus the first year of employment was 15%; 2nd year 20%. Last year ended up being 32% after the addition of the above mentioned flight bonus increase and our principal awarding a little extra forseeing difficult economic times ahead for his employees.