You may be able to file for disability benefits if you are still working, but only if your monthly gross earned income is below the annual substantial gainful activity (SGA) level for that year. For example, in 2021, the SGA level was US$1,310 in gross monthly earnings, so a person earning less than this amount per month that year could have applied for benefits. It should be noted that the SGA level is US$1,350 gross earnings for 2022.