Shouldn't landlord shovel?

My and husband and I rent the upstairs unit from a couple who are also the landlords/owners. It will be a year in June that we moved here, but it just started getting weird living here. They were supposed to supply us with storage but that never came to fruition and we have to pay an extra $75 just to rent storage off site. We live in Wisconsin and it snows, now it has been twenty four hours and the man has not shoveled. My husband offered once to help, but with his bad back he can't do much. The landlord does not have it stipulated in our lease that we do yard work or shoveling, but if he would at least meet us half way and give us something off the rent we would maybe considered helping, but no dice. I wonder if he is uming that we're supposed to shovel?? I don't think so. I feel they took that time my husband offered to help that one time for granted and now thinks it is our responsibility to do their job? (It is a duplex).. They have no problem not giving us what we need, such as no parking spaces or storage.. We will be moving when June comes. I've heard that it is not wise to live with the landlord on site anyway!