Labour Market Information or LMI usually refers to data found in tables, spreadsheets, maps, graphs, charts, reports and newspaper articles, or it may exist informally and anecdotally.
It can tell us:

where jobs are currently located

the current size of industrial sectors and changes which might be expected in coming years

where there are shortages or oversupply of potential employees and skills

the hours and wages that can be realistically expected

the skills employers are seeking

entry routes into jobs, careers and sectors

LMI is collected by a variety of organisations, including government departments and agencies, employer and professional organisations, trade unions, academics, as well as Sector Skills Councils.