Зарекомендовав себя как следует, т.

Зарекомендовав себя как следует, т.е. показав качество и точность переводов, работники находят постоянную клиентуру, а значит и постоянную, достаточно высокую плату.

Результаты (английский) 1:

Proved itself as it should be, i.e. showing the quality and accuracy of translations, workers find permanent clientele and thus a constant, rather high cost.

Результаты (английский) 2:

Having proved himself as follows, ie, show the quality and accuracy of the translation, the workers are permanent clientele and, therefore, a constant, relatively high cost.

Результаты (английский) 3:

After having proven itself as it should be, i.e. , showing the quality and accuracy delivered, workers have found a permanent clients, and therefore a constant, high enough the card.