A baler comprising: a baling chamber, a plunger movable with respect to the baling chamber; a bale case; a first sensor operable to measure the force applied to the plunger; a second sensor operable to measure movement of a formable bale with respect to the bale case; and a controller in operable communication with the first sensor, the second sensor, and the plunger, characterized in that the controller is configured to: calculate the force applied to the plunger over a predetermined period of time based on readings from the first sensor, calculate the distance a formable bale has moved with respect to the bale case over the same predetermined period of time based on readings from the second sensor, calculate the work exerted by the plunger at least partially based on the force applied to the plunger and the distance a formable bale has moved with respect to the bale case; and compare the work calculation with one or more pre-calculated parameters wherein the controller is configured to calculate the work calculation with one or more pre-calculated parameters by comparing the work calculation with a maximum work limit, and wherein the controller is configured to modify the one or more baling parameters by adjusting a level of resistance applied to the formable bale by the bale case. a baling chamber, a plunger movable with respect to the baling chamber; a bale case; a first sensor operable to measure the force applied to the plunger; a second sensor operable to measure movement of a formable bale with respect to the bale case; and a controller in operable communication with the first sensor, the second sensor, and the plunger, characterized in that the controller is configured to: calculate the force applied to the plunger over a predetermined period of time based on readings from the first sensor, calculate the distance a formable bale has moved with respect to the bale case over the same predetermined period of time based on readings from the second sensor, calculate the work exerted by the plunger at least partially based on the force applied to the plunger and the distance a formable bale has moved with respect to the bale case; and compare the work calculation with one or more pre-calculated parameters a plunger movable with respect to the baling chamber; a bale case; a first sensor operable to measure the force applied to the plunger; a second sensor operable to measure movement of a formable bale with respect to the bale case; and a controller in operable communication with the first sensor, the second sensor, and the plunger, characterized in that the controller is configured to: calculate the force applied to the plunger over a predetermined period of time based on readings from the first sensor, calculate the distance a formable bale has moved with respect to the bale case over the same predetermined period of time based on readings from the second sensor, calculate the work exerted by the plunger at least partially based on the force applied to the plunger and the distance a formable bale has moved with respect to the bale case; and compare the work calculation with one or more pre-calculated parameters calculate the force applied to the plunger over a predetermined period of time based on readings from the first sensor, calculate the distance a formable bale has moved with respect to the bale case over the same predetermined period of time based on readings from the second sensor, calculate the work exerted by the plunger at least partially based on the force applied to the plunger and the distance a formable bale has moved with respect to the bale case; and compare the work calculation with one or more pre-calculated parameters wherein the controller is configured to calculate the work calculation with one or more pre-calculated parameters by comparing the work calculation with a maximum work limit, and wherein the controller is configured to modify the one or more baling parameters by adjusting a level of resistance applied to the formable bale by the bale case.