It's really hard to tell. My mother works in a public hospital for over 20 years and get $500 ($300 goes to pay for rent, water, electricity etc.). On the other hand my friend, who's still on university have salary of $800.
A regular employee receive a minimum salary of at least 300.00 per day,so that's gonna be around $165.00 per month.
But there are employees who get more than that of course it depends on your position in the company.
it depends actually on what position are you and the type of jobs you're in. the $150 is mostly paid if you're working in a fastfood chain. i have a different job and it pays at about $200 per month and it's pretty good.