JewsAndJoes.com

["Jubilee years at 49 back-to-back year increments (not 50 year increments). Each 50 year Jubilee is the same as year 1 of each repeating 49 year cycle (hence each Jubilee is year 1 and year 50)."]

Not if the 50th is a Holy Rest year, the first year of the next 49 year period you could do work, the 49th was a Sabbath year too.
It's 50 years back to back, for each Jubilee period.

Peace