Mexico IMSS tightens Modalidad 40 salary rules for voluntary pension contributions

Mexico's IMSS has restricted the salary base for Modalidad 40 voluntary pension contributions, limiting it to the last salary at job separation or that amount plus one. This change reduces the ability of workers to inflate their pensionable salary through retroactive payments, potentially lowering future pension benefits. The policy shift affects workers' retirement planning and may have fiscal implications for the social security system.