Let's say that employer and employee were both JW. Employer could not legally fire a df employee and if he did, the courts would have authority over the situation but if the employer was df, it would be a matter of personal decision if employee wanted to quit or not. Could the employer bring the employee to court for not wanting to work for the reason of df? How could the Courts enforce ? How could the Court force Respondent's customers to do business with him in this related case? By adjudicating church practice as secular procedure and imposing rules of secular justice so that church discipline including expulsion measure up to a justiciable standard vs church doctrine judicially reviewable by the Court: Secular standards are standing in a holy place.
(But what if employee still refuses to work for employer? What can the Courts do?)
"Mr. So and So the decision of this JC is to df you but we can't do that based on legal standards that we are forced to follow, on religious grounds you are df but you still a legal member of this church."
"This is to inform the Cong that brother so and so is no longer a spiritual member of this church but legally he still is a member, you must legally continue to view him as a member. There is nothing we can do about it."