It doesn’t mean that the job pays less, it just means it doesn’t pay to sufficiently provide an incentive to take it. People simply might not take what is like

It doesn’t mean that the job pays less, it just means it doesn’t pay to sufficiently provide an incentive to take it. People simply might not take what is likely a physically demanding job if the compensation isn’t sufficiently high. There can be also other reasons like the fact that they might be looking for a better opportunity and not simply taking on any job. Other things like the hidden cost of having a job which can include things like commuting costs, loss of other employment opportunities like part time jobs or side gigs or added costs due to having to pay for child care can also be a good reason why one might not take a job even if it does pay above minimum wage and even above the local living wage.