No. Generally speaking, the employer has the right to determine where the work gets done and employees are not within their rights to refuse to return absent a legitimate health and safety or human rights issue.
The Occupational Health and Safety Act allows employees to refuse to work if she/he reasonably believes that the work is dangerous. It is not enough for an employee merely to feel unsafe. That belief must be a reasonable one, based on the real risks of exposure to the virus in that particular workplace. Employers cannot reprise against employees for refusing unsafe work. While sending employees home to work may be a viable option to reduce the risk of infection, absent a stay-at-home order, there is no free-standing right to work from home as a result of COVID-19.
If the employee is unable to return to the workplace due to a human rights need, such as family status or disability, the employer must accommodate these employees up to the point of undue hardship. Accommodation is a two-way street, meaning employees must participate meaningfully in their own accommodation. Moreover, employees are entitled to an accommodation – it need not be their preferred accommodation (such as work from home).