The selected task was an assembly task from a local electrical company, assembly of fused electrical switch that consisted of eight parts. Usually, simulated tasks are chosen for research purposes that do not represent real life industrial tasks. Manual assembly of switches is a common task in electrical industry. The selected task was a highly repetitive task and it was performed on workstations that were not designed ergonomically. Also, the task method was not designed following ergonomic principles. The assembly task involved picking up the switch base and cover from the bins, assembling all the inside parts in the base, putting the cover, tightening the assembly using a screwdriver and placing it in the outgoing bin. The steps of the assembly task were modified in the new design considering motion study and ergonomic principles. A jig was designed and used in the performance of the task on the smart workstation. A power screwdriver was used for tightening the cover in the modified task method.