Positive aspects of working at Sanyo Denki Singapore mentioned by reviewers include additional holidays and benefits such as transport allowance and medical benefits. However, there were several potential challenges noted, such as a non-functional human resources department, petty management with poor communication, a heavy workload with unlimited repair work, time constraints, overtime, and weekend work required, a stressful job environment with internal conflicts, average salary, and office politics with mistrust of expatriates in local employees.