The government will also address the issue of "income barriers," or income thresholds at which part-timers, often dependents of their spouses, must start paying or pay more income tax and social insurance premiums when their income exceeds certain levels. Companies that pay for the social insurance premiums of such employees will receive up to 500,000 yen per worker. The barriers are blamed for discouraging part-timers from increasing work hours. The rise in minimum pay will help such workers maintain salary levels with shorter work hours, raising concern that the country's labor shortage will become more serious.