Leather or "pleather" (fake leather/vinyl) office chairs are very smooth and comfortable and are less likely to feel itchy or scratchy when you sit in them for a long time. However, they do require extra care to keep them looking their best. Here are some maintenance tips you will need to care for your leather/fake leather chairs.
For Real Leather Chairs
Real leather chairs need to be oiled with a soft rag and oil. If you have some down time, you can put a little of the oil (like the kind you use to oil a baseball glove) on the rag and gently rub it into the chair's seat and back. If the arms also have some leather rests on them, be sure to oil these as well. Rub it in in a circular motion so that the leather absorbs the oil well. Allow the chair some time to sit, then take a clean, dry rag and gently blot to lift any residue that remains (there should be little to none, so if you are lifting a lot of oil this way, then you oiled it too much or you did not leave it sit long enough to soak up the little bit of oil you did use).
For Pleather/Fake Leather/Vinyl Chairs
First, determine what type of fabric is used to make your chair. It should have said on the sales tag or on the box when you received the chair. Pleather, fake leather and vinyl chairs are essentially plastic that is made to be soft, smooth/textured, and pliable. These chairs can be wiped down gently with a damp (not moist or wet) cloth. If the chair has an especially unpleasant spot on it (exploded ink pen), use a specialized soap to help you remove stains and sticky messes from the pleather/fake leather/vinyl. Then continue to wipe down the chair as you normally would.
These kinds of fabrics are more prone to splitting and shredding, so you may want to invest in special products that help you repair tears and prevent shredding. Be sure to ask your business retail store about what kinds of products you can use for these issues. They may suggest a couple of different products you will want to keep on hand in the event that something goes awry with your chair in the future. Also check with the manufacturer in case there are some very special rules for caring for your chair and keeping it nice.