Does OSHA limit kneeling, squatting or lifting for veterinary technicians?

Restraint work places veterinary technicians and assistants in sustained awkward postures, and no OSHA standard addresses the exposure directly. OSHA confirmed that absence in 2015 and then made clear that the absence of a standard is not the absence of an obligation. The same letter takes a position on back belts that runs contrary to common practice.

Background

On November 23, 2014, Ms. Christine Rechner wrote to OSHA asking what requirements protect veterinary technicians and assistants from knee, ankle, and back injuries. OSHA restated her scenario as follows: "Veterinary technicians and assistants are required to restrain pets during exams. Restraining pets requires these employees to squat or kneel for a large portion of the day. The employees may also need to lift heavy pets." Thomas Galassi, Director of the Directorate of Enforcement Programs, responded on February 13, 2015.

No standard, but not no duty

OSHA answered the specific question in the negative and then immediately qualified it:

OSHA does not have any specific requirement that would limit the amount of time an employee is required to work in an awkward posture, such as squatting or kneeling. Nor does OSHA have a personal protection requirement for work that requires squatting or kneeling. However, the absence of an OSHA regulation does not mean that employers can expose an employee to a recognized hazard. Section 5(a)(1) of the Occupational Safety and Health Act of 1970 requires employers to furnish to each of his employees employment and a place of employment which are free from recognized hazards that are causing or are likely to cause death or serious physical harm to his employees (also known as the general duty clause).

This is the mechanism by which ergonomic exposure remains enforceable despite the absence of an ergonomics standard.

OSHA accepts the hazard and identifies a threshold

The agency did not treat the concern as speculative:

We agree there are awkward postures and contact pressures experienced by many veterinary technicians as described in your letter. The ergonomics literature has identified squatting and kneeling as a source of musculoskeletal disorders when there is cumulative exposure of 4 or more hours daily.

The four hour figure is drawn from the ergonomics literature rather than from any OSHA standard, and OSHA does not present it as an enforcement threshold. It is nonetheless the only quantitative marker the agency offers, and it is a reasonable trigger for assessment.

Controls, in OSHA's order of preference

OSHA noted that the American Veterinary Medical Association publishes ergonomic guidelines identifying risk factors, then observed a gap in them: "the guidelines do not recommend controls." The agency supplied its own hierarchy:

OSHA believes there is a hierarchy of controls that starts with eliminating the ergonomic risk. For those risks that cannot be eliminated, the hierarchy of controls, in order of most to least effective is: engineering; administrative; work practices; and personal protection equipment (PPE).

Two findings on protective equipment

The letter draws a distinction that is easy to lose:

OSHA agrees that PPE for kneeling reduces contact pressure. PPE does not reduce the risk related to the awkward posture, as you described in your letter.

Knee protection addresses pressure. It does nothing about the posture itself, which is the source of the musculoskeletal risk. Issuing knee pads and considering the exposure controlled misreads what the equipment does.

On lifting, OSHA is more direct:

Regarding the use of back belts, OSHA and the National Institute for Occupational Safety and Health (NIOSH) have both taken the position that back belts are not appropriate PPE for the back when an employee is lifting.

The agency instead points to the NIOSH lifting equation, and notes that assessment tools built on it have been published by the Ohio Bureau of Workers' Compensation and the Washington State Department of Labor and Industries.

What this means for your practice

1. The General Duty Clause is the operative authority. No ergonomics standard applies, but 5(a)(1) reaches recognized hazards. OSHA states plainly here that it regards these postures as recognized.
2. Four hours of cumulative daily exposure is the marker to watch. It is not an enforcement threshold, but it is the figure OSHA cites, and it is a defensible trigger for assessing restraint workload.
3. Knee pads are the last resort, not the answer. PPE sits at the bottom of OSHA's hierarchy, and the agency is explicit that it addresses contact pressure while leaving posture risk intact.
4. Reconsider back belts. OSHA and NIOSH both reject them as appropriate lifting PPE. A practice issuing them as a lifting control is relying on something the agency does not accept.
5. Reducing the need for human restraint is an engineering control. It sits at the top of the hierarchy, and it is where OSHA's framework directs attention first.
6. The AVMA guidelines identify risks but stop short of controls. OSHA says so directly. Treat them as a hazard inventory rather than a compliance program.

This interpretation dates from 2015 and was corrected by OSHA on May 13, 2019. It addresses only the scenario presented and, in OSHA's words, "may not be applicable to any situation not delineated within your original correspondence." Interpretation letters explain existing requirements and do not create new obligations. Consult the original before relying on it.