Job proximity and accessibility for workers of various wage groups

This research proposes two indexes, job proximity and accessibility. to measure workers' location advantage by residences with respect to then job markets. Job proximity is designed to capture the spatial separation between residents and jobs. Job accessibility measures one's ability to overcome Such separation as may be affected by transportation means. road network, congestion. and intensity of competition for jobs among workers. The research compares the two measures among workers of various wage levels in an attempt to reveal who has the greatest advantage in job access and whether job access is a spatial or nonspatial issue. In Cleveland in 1990, the mean wage rate of $30,000 was a critical turning point: below this level, the higher the mean wage rate in a residential area, the farther the area wits away from jobs: above this level. the trend is reversed. In other words, below a wage threshold. workers tend to trade better and more spacious housing (Usually farther away from jobs) for more commuting: but above the threshold, workers retreat for saving in commuting (pertaining to their high opportunity cost of commuting). Although low-wage workers enjoy better job proximity, many of them (particularly some inner-city residents) have the worst job accessibility because of their limited transport mobility as indicated by a low level of automobile ownership. Job proximity declines with distance from the CBD and conforms to the monocentric model, as does job accessibility but to a less degree. Since workers with various wages respond differently to job access. the distribution of mean wage rates in the metropolitan area is hardly monocentric.