COVID-19: What’s new

• Public health orders (updated Jan. 8): Sports and recreation, gyms and fitness centres, accommodation, faith-based organizations, performing arts, movie theatres, retail and vending markets, party buses and limousines, mandatory masks, worker health checks, more info.
• Resources: Mental health guides for workers and employers, workplace masks poster, face shields in non-health care settings, reviewing and updating your COVID-19 safety plan, revised entry-check poster for workers and visitors, information in other languages

COVID-19: Information and resources

Protocols for Phase 2 and 3 industries, Protocols for Phase 1 industries, General health and safety, COVID-19 Safety Plan template, OHS guideline G3.3 (COVID-19 Safety Plan), and more resources; Claims, Insurance

Bill 23, Workers Compensation Amendment Act, 2020

Overview of changes in effect Jan. 1, 2021, Summary of provisions, Historical reports, Board of Directors’ decision on the consequential amendments

Staffing Solutions. For nearly 30 years leading companies from across the nation have trusted AtWork to recruit the very best talent. From general laborers to corporate executives, we have your business covered.

Public health orders: Requirements for employers

• Make the next step in your career on Monster jobs. Browse 295547 Work From Home jobs on our job search engine. Apply now for jobs hiring near you.
• Connect employees with familiar video communication and collaboration tools in Workplace from Facebook.

Health & Safety

Requirements, hazards, equipment, industries, training and certification, investigations

A force with no motion or a force perpendicular to the motion does no work

These two examples of forces which do no work are paradoxical. You can certainly feel fatigued when doing either of these, so how can you say that no work is done?

In the case at left, no matter how hard or how long you have pushed, if the crate does not move, then you have done no work on the crate. It is sitting still in the same place! Why then do you feel fatigued (as well as frustrated, etc. ). The resolution to this dilemma comes in considering that when your muscles are used to exert a force on something, the individual muscle fibers are in a continual process of contracting and releasing to maintain the net collective result of a steady force on an external object. That contracting and releasing involves force and motion, and constitutes internal work in your body. The energy shows up as warming in your muscle tissue, but if the crate doesn't move, there is still no net work on the crate.

Workforcenow.adp.com

The example at right is another standard paradox in the definition of work. If the box is being carried at constant velocity, then no net force is necessary to keep it in motion. The force exerted by the person is an upward force equal to the weight of the box, and that force is perpendicular to the motion. If there is no motion in the direction of the force, then no work is done by that force. Yet you certainly feel like you are doing work if you carry a heavy box. The resolution of the paradox is similar to the first example - your muscles must maintain an extra tension to stay upright under the load. This requires a greater amount of internal contraction and release of our muscle fibers, and hence internal work in our bodies. But the work done on the box is zero since by moving in a straight line at constant speed, its energy is remaining the same.

Atwork Sign On

There are many important examples of forces which do no work because they act perpendicular to the motion. For circular motion, the centripetal force always acts at right angles to the motion. It changes the direction of the motion, but it does no work on the object. This can be applied to any circular orbit.