The Samoa Workers Union has voiced concern at a government proposal to increase worker contributions to the Samoa National Provident Fund.
The fund is a compulsory saving scheme that provides welfare payments to members including pensions.
Employers are required by law to match worker contributions to the fund.
Union president Gatoloai Tili Afamasaga told TV1Samoa he doubted the ability of employers to meet the proposed three percent increase without job losses.
The government has proposed bringing in the increase in stages of one percent a year starting in July so that by 2021 contributions will be 10 percent of annual salaries or wages.
Gatoloai said he was also worried for small businesses and how they would cope with the extra expense.