As an alternative - I work site based requiring me on site 15 days at a time, 6 days off. Accommodation and food provided. As a salaried employee I am given a 40% uplift for this. I have heard of cases where this can be as great as 60%. However, the detail is in the numbers - when on site you are usually required to work 12hr days. 50% more hours, 40% more pay. Go figure.