[mykalberta]

You have the right to leave a company at any point and the company can change policy at any point.

Example - The company has the rights to change things to meet is business goals. If it was a casual slacker office where you wore jeans all the time and the company decided to make the office into a more sales/presentation office than they have the right to change the dress code and the employee has the right to either ask for a clothing allowance or find another job if they dont think they are compensated.