When thermal equilibrium is achieved no more work can be performed through thermodynamic processes as a temperature differential does not exist to drive those processes. From a thermodynamic standpoint the system has reached maximum entropy and disorder.
But as long as there is motion, there is kinetic energy to do WORK, the DYNAMIC part of ThermoDYNAMICS. You can't take the DYNAMICS out of ThermoDynamics no matter how hard you try, and you will never stop trying simply because you are too dishonest to admit that a know-it-all like yourself could EVER be wrong.