IMHO, it's a very good price, especially if it includes tax. Disney's advance purchase discount price for a 5 Day PH is $ 231.12, including tax. The best prices I could find from the online brokers for 5 Day PH tickets were $243.89 and $230.95. Not all of the online brokers sell the "plain" park hopper passes.
If you don't plan on going to PI or any of the waterparks, I'd go with your employer's offer. I think you would have to go to more than one "plus" option to make a a PHP ticket a better value. I know I've seen 5 Day PHP tickets (2 Plus options) for $238.
Enjoy the trip!