Do I need a chair mat for an office chair?

On carpet: yes, a chair mat makes rolling much easier and protects the carpet from wear patterns under the chair. On hard floors: a chair mat is optional — soft polyurethane casters are gentler on hardwood and tile without a mat, but a polycarbonate mat provides additional floor protection. On concrete: standard casters work fine; a mat adds fatigue reduction if you're on your feet at the workstation. Look for mats with a smooth underside for hard floors and a gripper underside for carpet. FindOfficeFurniture.com has office chairs and compatible chair mats — call 888-719-4960.