I am sorry, but your question is pretty vague with language mistakes so it is hard to understand what you are trying to ask.
"temp foreign worker" must provide "employee's transportation" ? (Do you mean his own transportation?). If that is correct, then yes you would buy your own ticket. But embassy doesn't ask for any such proof in advance. And on a work permit you are fine to buy a one way ticket so "back to the country", doesn't make any sense to me.
"Employer is ENTITLED?"... If you mean to ask whether it is employer's responsibility to provide ticket, then NO. It vary on a case to case basis. Some employer might offer you this where as others don't. There is no such restriction from CIC. Also even if an employer offers to cover cost of relocation, usually they would pay this after you land in Canada, not before. However, it might appear as something like "joining bonus" on your contract.
I am not sure if your employer is based in British Columbia, why are you referring to Alberta? Province only matters in the sense that employer would apply for LMO to respective administration. If employer is in Quebec, in addition to LMO, he would get you a CAQ too. Then you, the employee would use that CAQ to apply for work permit in your home country.
The work permit regulations are Canada wide, formalized by CIC. Except minor differences like CAQ, it is not specific to province.
However, if the reason is that you intend to LAND in Alberta for some reason, you might need to CLEARLY communicate (and convince) at landing that you are going to work in BC with your offer letter and other details, and make sure they print BC and city on your work permit. You need to have a legitimate reason to land in another city / province as opposed to your work permit. But this can be done and i know of people who did it. E.g. a friend had relatives in Toronto so he landed there with family, left them there for a while, and went to Quebec to start his job in say Montreal (where his employer was, and work permit was for), find a house and then bring over his family. So CIC accepts such a situation.
Hope that helps