I have some chairs on the carpet, can I skip the anti-static floor mats and grounding chains?
According to your question, I first assume that your location is in a production workshop; then assume that your carpet is insulated, and the floor is also non-anti-static.
If your chair is used for rest, it is recommended that you place the chair at least one meter away from the anti-static work area.
If your chair needs to be placed in an anti-static work area, then it is recommended that you use an anti-static chair and remove the carpet.
If your carpet must be used due to technical requirements, then it is recommended that you make the carpet conductive (such as spraying antistatic liquid, etc.).
Also, wherever ESD-sensitive components are worked on or stored, workbenches, etc. should be protected with a grounded ESD mat. You want to make sure the anti-static mats are dissipative so they don't cause an ESD event. Depending on the activity, everyone should be grounded on both feet and one wrist.