Another crucial difference in Canada is that the process is split into a two-tiered system of high-wage and low-wage programs. High-wages jobs will have very stringent applications, higher fees, and high proof that hiring foreign workers will not replace Canadian workers. Low-wage jobs, on the other hand, have less stringent applications but must take into account the availability of the job to Canadian applicants. In most cases, long-term employment will be offered in high-wage roles; however, low-wage jobs are found mostly in the agriculture and retail sectors. Both streams of LMIA balance the needs of businesses with domestic workforce protection in line with achieving economic growth and fair labor practices.
https://lmia.oasis-india.com/blogs/high-wage-vs-low-wage-lmia-in-canada/