The minimum wage has long been a controversial subject, especially given concerns that employers could exploit workers by paying them less than a fair wage. In the past couple of years the push to increase the minimum wage has been highlighted by many workers who were deemed essential during the pandemic but whose pay was effectively the minimum wage. There are many arguments for and against increases, and there are also prevailing economic theories that explain the effect of the minimum wage on unemployment.
For scale, Ghana's Gross National Income per capita stands at approximately $2,630 on the nominal Atlas method, or about $7,730 adjusted for Purchasing Power Parity. The national daily minimum wage is a separate and much smaller measure, and the two should not be read against one another.
Ghana's national daily minimum wage is GH¢21.77, which amounts to a monthly minimum wage of approximately GH¢587.80. However, economists remain uncertain as to the long-term impact of these policies on the welfare of workers. Some studies suggest that raising the minimum wage has a small negative effect on employment rates, while others find no such adverse effect. If the market wage is low, a binding minimum wage can make employment more attractive to workers, strengthening their search efforts and so reducing unemployment; if the market wage is high, a binding minimum wage might discourage workers from looking for a job because there are fewer vacancies.
Raising the minimum wage does not automatically guarantee workers higher income, employment and welfare in the long run. Part of what makes it so tricky to quantify the impact is that minimum wage policies can influence firms' behaviour in a variety of complex, interrelated ways. If an increase requires a firm to double the wages it pays to a worker, it may decide not to hire that worker any more and instead carry out its production with another worker, though it will take time for firms to reorganize their production practices.
The association's researchers have examined how the minimum wage affects workers and the economy, who benefits from it, and how the declining value of the national minimum wage over time has contributed to growth in income inequality. Their studies suggest that firms may respond strategically to minimum wage increases by changing their approach in other areas, such as downsizing the workforce or worker schedules, thereby resulting in unemployment and underemployment.
The researchers note that minimum wage increases are accompanied by a host of other external factors and policies, making it difficult to identify test environments that enable a true like-for-like comparison of before and after. Their evidence shows that responses to a key labour market institution such as the minimum wage are influenced by the structure of the labour market, which further underscores the role of employer concentration.
When it comes to assessing the impact of the minimum wage on worker welfare, economists and policymakers tend to emphasize employment rates alone. The association's research shows that other factors, such as benefits and worker schedules, can make a major difference: even if overall employment rates remain constant, increasing the minimum wage can lead firms to make strategic shifts in labour scheduling practices that ultimately have a substantial negative effect on the welfare of the very workers these policies aim to protect.