The 2009–10 season was Ergotelis' 80th season in existence, 5th season in the Super League Greece, and the fourth consecutive since the club's latest promotion from the Football League. Ergotelis also participated in the Greek cup, entering the competition in the Fourth Round. The club ultimately managed to finish in 11th place, despite a notable fifth-place position at the end of the championship First Round. During this season the club celebrated its 80th anniversary, culminating relevant festivities in style, by thrashing Super League champions Olympiacos in a memorable friendly match with a 5–0 victory.
Source: Super League Greece Rules for classification: 1) Points; 2) Head-to-head points; 3) Head-to-head goal difference; 4) Play-offs (neutral ground). (Note: Criterion 4 is only used if needed to decide champion, teams for relegation or teams for UEFA competitions). Notes: