Labour disputes are tough, both financially and ethically. The nurse writing the commentary below highlights the conflict between the moral obligation to fellow obligations to members of one’s bargaining unit, and the obligations more standardly referred to in relation to nursing.
California Nurses Association bullies, divides hospital staff: Guest commentary
…A CNA flier reads, it is your “moral obligation” to strike with fellow nurses.
The CNA does not know my morals. Patient safety is a moral principle to me. I am asked to understand the bigger picture in regard to patient care and why we are striking, and I did….
The Nursing Ethics Blog 
This is very well said.
Neither side is without fault and the courageous nurse thinks for self and what each self can live with. Respecting one and others views is imperative.