expatriates: BEWARE of such Companies

I am a Canadian Senior Engineer who worked and quit from a company still applying the following unjust and unacceptable policies:

1- Preserving the passport
2- Preserving 1 month salary
3- Paying Salaries always Late (between 4th&10th)
4- Salary yearly increase Not granted
5- Salary Not paid in full amount after each leave or vacation (but paid in partial and reimbursed based on other weird system)
6- Not paying vacation & end of service based on Basic Salary (but based on other calculation to get lower basic salary)
7- Not paying contract bonus as agreed
8- Not providing private medical insurance
9- Not providing family size car (or equivalent allowance)
10- Not providing scholarship allowance
11- Not providing yearly exit for senior employees

ADVICE:
Always read all contract terms and ask for internal policies before signing any contract.

Good Luck!