The reason for having interior landscapers water your office plants is because most office personal do not have the time to do it.

Office plants need to be watered properly because they are so costly if they decay and die.
If your interior office plants are not watered correctly, they can become unsightly.
Root structures such as fine delicate root hairs can become soft, non functional and even decompose.
Without the correct watering procedure the roots can not function properly.
Water, nutrients and minerals will not be absorbed from the soil into the plant. Transpiration up and through the root hairs, roots stem and then finally through and out of the leaves , will not occur.
The result is wilting then death of your indoor plants.