Total Population 20000 WorkingAge Population 15000 Employmen

Total Population                      20,000
Working-Age Population         15,000
Employment                              1,000
Unemployment                             100

The labor force participation rate for this simple economy should be 1,000 (Employment) 15,000 (Working Age Population x 100

Can confirm if my answer is correct.    

Solution

Labour force participation rate = Number of people actively participating in the labor force (Employed) / Total number of people eligible to participate in the labor force (Working-age population)

= 1000 / 15000

   = 0.0666 (approx)

= 6.66 % [ Multiply 0.0666 by 100 to get answer in percentage.]

Conclusion:-  The labor force participation rate for this simple economy would be 6.66 %