I **** near dropped it 4 times from entering the parking lot at work and getting into a parking space. Idiots went with the lowest bidder to 'repair and re-seal' the whole lot and the final results is both incredibly sticky and slick as snot. Don't ask me how they managed it, but the front end kept trying to slide out from under me in a straight line, then grabbing hard, nearly yanking the bars out of my hands. Hopefully, it sets soon and gets better.
Sounds like they installed a set of "tar snakes" in the lot. They are really hazardous to you. With a Phoenix summer coming, I doubt that things will get any better for months. My best advice is to drive the cage to work, not the bike, for now. Hate to say it, but there it is; your lot is now a motorcycle minefield. Wishful thinking and a "tough it out" attitude are NOT going to fix anything, there. Dropping the bike is plenty bad enough. Dropping the bike in the path of an oncoming car can ruin your whole day.
Some dirt-bike instruction/experience can be a big help, but the FJR is a heavy bike. If you are leaning or braking when you hit the tar snake, best wishes. Treat them just like patches of ice (close enough, in terms of traction). Choose your riding path to minimize crossing any tar snakes, and slow down on unfamiliar roads that have been "tar snaked.".
If you make the management at work aware of the problem, they may give you a safer place to park the bike, where there are NO tar snakes. If they do not, I would not risk the bike or your health by riding in to work. The risks are large. Maybe you can park the bike on the street, or in some safe place nearby, if you insist on riding in. Do a Google search on "tar snakes" if you think this hazard is rare, or less than dangerous. Many states in the USA repair road cracks using tar snakes, including mine. Scan the road ahead, stay loose, and keep speeds down on these hazardous road surfaces.