I just recognized that your are saying "contacts of employment", and you may mean "contract of employment", is that correct?
Your compensation package is being renegotiated?
I would bet your Government would agree with you, but I am just a service tech too (IANL).
I would want to see this new policy in writing, signed, on the letterhead of the company, if this is being done from the top of the corporation.
This sounds to me like a middle manager trying to improve his numbers at your expense, rather than something that has gone through a major corporation legal and HR departments before being forced on the employee.
If the company is getting paid for your time, then you also must be paid for that same time. I hesitate to call them "your employer" for that time frame, since employee indicates someone being paid.
I am of the firm opinion that theft occurs when someone gets paid for someone else's labor but feels as if they don't have to pay the person doing the work for that same labor/time.
I also bet there are other farther reaching items involved.
Let's look at this as if your time was some solid object, like a block of wood.
The customer pays for a block of wood, and the company receives money for that block of wood, but does not then pay it's supplier for that block of wood.
Is that fair to the wood block supplier? Or is it breach of contract or theft? What is different about the block of wood and the block of time, other than one is tangible?
Of course the other side of the coin is that this may be their method of renegotiating their responsibilities as an employer, and your only recourse may involve finding a new employer. good luck