My office is an oven and management is doing nothing about it.

I live and work in NJ and it gets very hot and humid in the summer. I work at a branch of a large, international company. Our home office is in another state, and we rent our space. Consequently, our landlord shares the building with us. The problem is our air conditioning: We have it, but it doesn’t work well once the outside temperatures get very hot (which has been just about every day.) Our office regularly climbs up to 80-82 degrees by the end of the day. My office manager said that he has complained to the landlord, but he refuses to replace the air conditioning unit. Instead, he goes the cheap route and tries to get it fixed, but it is beyond repair. I am having a very hard time functioning in the heat, as are my coworkers. Apparently the home office pays the rent, so they have no idea what it’s like to work in this sauna. And like I said, my office manager says there’s nothing he can do. So here we are, a bunch of educated, middle aged professionals forced to sweat it out. On a side note, my team and me – the admin team – have to be at the office all the time. The rest of the office, comprised of project managers and salespeople, get to work remotely when they want and escape the heat, and this includes the branch manager. Nothing burns me more than watching everyone leave early to “work from home” when I know they are just getting out the office into their air conditioned cars. So here’s my question: Is there anything we can do to get the landlord to fix the A/C? Is it legal to make people work in an 80 degree office? I hate to be a complainer, but I feel that our management isn’t taking enough of a stand in this situation because they aren’t the ones suffering like the admins.