The base employee income for a specified period, based on pay rate. Can be:
6 Salary (a fixed amount, daily/weekly/monthly, which is adjusted based on number of days worked/not worked)
7 Wage (an hourly rate adjusted for the number of hours worked)
8 Piece (a certain amount for each unit of work done)
The gross income can also be adjusted for items such as commissions and bonuses.
Money earned on a regular basis based on previous sales made.